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545005221 = 3293961813
BaseRepresentation
bin100000011111000…
…001111010100101
31101222112010121120
4200133001322211
52104010131341
6130025204153
716335316335
oct4037017245
91358463546
10545005221
1125a706542
12132630659
1388bb1bc7
145254d0c5
1532ca8066
hex207c1ea5

545005221 has 8 divisors (see below), whose sum is σ = 726932640. Its totient is φ = 363207312.

The previous prime is 545005213. The next prime is 545005229. The reversal of 545005221 is 122500545.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (545005213) and next prime (545005229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 545005221 - 23 = 545005213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545005191 and 545005200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545005229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22090 + ... + 39723.

It is an arithmetic number, because the mean of its divisors is an integer number (90866580).

Almost surely, 2545005221 is an apocalyptic number.

It is an amenable number.

545005221 is a deficient number, since it is larger than the sum of its proper divisors (181927419).

545005221 is a wasteful number, since it uses less digits than its factorization.

545005221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64755.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 545005221 is about 23345.3468811239. The cubic root of 545005221 is about 816.8335253855.

Adding to 545005221 its reverse (122500545), we get a palindrome (667505766).

The spelling of 545005221 in words is "five hundred forty-five million, five thousand, two hundred twenty-one".

Divisors: 1 3 2939 8817 61813 185439 181668407 545005221