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564656461 = 1182747743
BaseRepresentation
bin100001101001111…
…111100101001101
31110100111112001021
4201221333211031
52124023001321
6132010314141
716664333515
oct4151774515
91410445037
10564656461
1126a808836
12139128951
138cca2665
1454dc6845
153488a941
hex21a7f94d

564656461 has 4 divisors (see below), whose sum is σ = 564716032. Its totient is φ = 564596892.

The previous prime is 564656447. The next prime is 564656471. The reversal of 564656461 is 164656465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 164656465 = 532931293.

It is a cyclic number.

It is not a de Polignac number, because 564656461 - 211 = 564654413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564656401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12045 + ... + 35698.

It is an arithmetic number, because the mean of its divisors is an integer number (141179008).

Almost surely, 2564656461 is an apocalyptic number.

It is an amenable number.

564656461 is a deficient number, since it is larger than the sum of its proper divisors (59571).

564656461 is a wasteful number, since it uses less digits than its factorization.

564656461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59570.

The product of its digits is 518400, while the sum is 43.

The square root of 564656461 is about 23762.5011520252. The cubic root of 564656461 is about 826.5353525777.

It can be divided in two parts, 56465 and 6461, that added together give a palindrome (62926).

The spelling of 564656461 in words is "five hundred sixty-four million, six hundred fifty-six thousand, four hundred sixty-one".

Divisors: 1 11827 47743 564656461