257160044 has 6 divisors (see below), whose sum is σ = 450030084. Its totient is φ = 128580020.

The previous prime is 257160019. The next prime is 257160049. The reversal of 257160044 is 440061752.

It is a super-2 number, since 2×257160044² = 132262576460163872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257159989 and 257160016.

It is not an unprimeable number, because it can be changed into a prime (257160049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32145002 + ... + 32145009.

It is an arithmetic number, because the mean of its divisors is an integer number (75005014).

Almost surely, 2^257160044 is an apocalyptic number.

It is an amenable number.

257160044 is a deficient number, since it is larger than the sum of its proper divisors (192870040).

257160044 is a wasteful number, since it uses less digits than its factorization.

257160044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64290015 (or 64290013 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 257160044 is about 16036.2104002161. The cubic root of 257160044 is about 635.9180669212.

The spelling of 257160044 in words is "two hundred fifty-seven million, one hundred sixty thousand, forty-four".