257155472 has 40 divisors (see below), whose sum is σ = 571290816. Its totient is φ = 109846656.

The previous prime is 257155469. The next prime is 257155477. The reversal of 257155472 is 274551752.

257155472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×257155472² = 132257873559085568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257155477) 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, 31883 + ... + 39125.

Almost surely, 2^257155472 is an apocalyptic number.

It is an amenable number.

257155472 is an abundant number, since it is smaller than the sum of its proper divisors (314135344).

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

257155472 is a wasteful number, since it uses less digits than its factorization.

257155472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7575 (or 7569 counting only the distinct ones).

The product of its digits is 98000, while the sum is 38.

The square root of 257155472 is about 16036.0678471999. The cubic root of 257155472 is about 635.9142982764.

The spelling of 257155472 in words is "two hundred fifty-seven million, one hundred fifty-five thousand, four hundred seventy-two".