564121256 has 8 divisors (see below), whose sum is σ = 1057727370. Its totient is φ = 282060624.

The previous prime is 564121223. The next prime is 564121279. The reversal of 564121256 is 652121465.

It can be written as a sum of positive squares in only one way, i.e., 303944356 + 260176900 = 17434^2 + 16130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35257571 + ... + 35257586.

Almost surely, 2^564121256 is an apocalyptic number.

It is an amenable number.

564121256 is a deficient number, since it is larger than the sum of its proper divisors (493606114).

564121256 is a wasteful number, since it uses less digits than its factorization.

564121256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70515163 (or 70515159 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 564121256 is about 23751.2369362103. The cubic root of 564121256 is about 826.2741284400.

The spelling of 564121256 in words is "five hundred sixty-four million, one hundred twenty-one thousand, two hundred fifty-six".