256244355 has 24 divisors (see below), whose sum is σ = 467535120. Its totient is φ = 129470400.

The previous prime is 256244341. The next prime is 256244369. The reversal of 256244355 is 553442652.

256244355 is a `hidden beast` number, since 2 + 562 + 4 + 43 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (256244341) and next prime (256244369).

It is not a de Polignac number, because 256244355 - 2⁶ = 256244291 is a prime.

It is a super-2 number, since 2×256244355² = 131322338938732050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148996 + ... + 150705.

It is an arithmetic number, because the mean of its divisors is an integer number (19480630).

Almost surely, 2^256244355 is an apocalyptic number.

256244355 is a deficient number, since it is larger than the sum of its proper divisors (211290765).

256244355 is a wasteful number, since it uses less digits than its factorization.

256244355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299731 (or 299728 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 256244355 is about 16007.6342724339. The cubic root of 256244355 is about 635.1623822636.

The spelling of 256244355 in words is "two hundred fifty-six million, two hundred forty-four thousand, three hundred fifty-five".