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556397 = 797043
BaseRepresentation
bin10000111110101101101
31001021020022
42013311231
5120301042
615531525
74505102
oct2076555
91037208
10556397
11350036
12229ba5
1316633a
14106aa9
15aecd2
hex87d6d

556397 has 4 divisors (see below), whose sum is σ = 563520. Its totient is φ = 549276.

The previous prime is 556373. The next prime is 556399. The reversal of 556397 is 793655.

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 an emirpimes, since its reverse is a distinct semiprime: 793655 = 5158731.

It is a cyclic number.

It is not a de Polignac number, because 556397 - 212 = 552301 is a prime.

It is a d-powerful number, because it can be written as 5 + 53 + 35 + 65 + 96 + 75 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3443 + ... + 3600.

It is an arithmetic number, because the mean of its divisors is an integer number (140880).

2556397 is an apocalyptic number.

It is an amenable number.

556397 is a deficient number, since it is larger than the sum of its proper divisors (7123).

556397 is an equidigital number, since it uses as much as digits as its factorization.

556397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7122.

The product of its digits is 28350, while the sum is 35.

The square root of 556397 is about 745.9202370227. The cubic root of 556397 is about 82.2485518171.

The spelling of 556397 in words is "five hundred fifty-six thousand, three hundred ninety-seven".

Divisors: 1 79 7043 556397