253871256 has 16 divisors (see below), whose sum is σ = 634678200. Its totient is φ = 84623744.

The previous prime is 253871243. The next prime is 253871281. The reversal of 253871256 is 652178352.

It is a super-2 number, since 2×253871256² = 128901229246035072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5288961 + ... + 5289008.

Almost surely, 2^253871256 is an apocalyptic number.

It is an amenable number.

253871256 is an abundant number, since it is smaller than the sum of its proper divisors (380806944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253871256 is a wasteful number, since it uses less digits than its factorization.

253871256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10577978 (or 10577974 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 253871256 is about 15933.3378800551. The cubic root of 253871256 is about 633.1955351791.

The spelling of 253871256 in words is "two hundred fifty-three million, eight hundred seventy-one thousand, two hundred fifty-six".