257452161 has 16 divisors (see below), whose sum is σ = 352742208. Its totient is φ = 166924800.

The previous prime is 257452159. The next prime is 257452193. The reversal of 257452161 is 161254752.

It is not a de Polignac number, because 257452161 - 2¹ = 257452159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (257452121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38346 + ... + 44556.

It is an arithmetic number, because the mean of its divisors is an integer number (22046388).

Almost surely, 2^257452161 is an apocalyptic number.

It is an amenable number.

257452161 is a deficient number, since it is larger than the sum of its proper divisors (95290047).

257452161 is a wasteful number, since it uses less digits than its factorization.

257452161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592.

The product of its digits is 16800, while the sum is 33.

The square root of 257452161 is about 16045.3158585302. The cubic root of 257452161 is about 636.1587629244.

The spelling of 257452161 in words is "two hundred fifty-seven million, four hundred fifty-two thousand, one hundred sixty-one".