257161450 has 48 divisors (see below), whose sum is σ = 588712320. Its totient is φ = 81385920.

The previous prime is 257161441. The next prime is 257161451. The reversal of 257161450 is 54161752.

It is a super-2 number, since 2×257161450² = 132264022732205000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257161451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23710 + ... + 32809.

It is an arithmetic number, because the mean of its divisors is an integer number (12264840).

Almost surely, 2^257161450 is an apocalyptic number.

257161450 is an abundant number, since it is smaller than the sum of its proper divisors (331550870).

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

257161450 is a wasteful number, since it uses less digits than its factorization.

257161450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56551 (or 56546 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 257161450 is about 16036.2542384436. The cubic root of 257161450 is about 635.9192258612.

The spelling of 257161450 in words is "two hundred fifty-seven million, one hundred sixty-one thousand, four hundred fifty".