257162201 has 4 divisors (see below), whose sum is σ = 262014372. Its totient is φ = 252310032.

The previous prime is 257162177. The next prime is 257162233. The reversal of 257162201 is 102261752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80910025 + 176252176 = 8995^2 + 13276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257162201 is a prime.

It is a super-2 number, since 2×257162201² = 132264795246328802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (257152201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2426006 + ... + 2426111.

It is an arithmetic number, because the mean of its divisors is an integer number (65503593).

Almost surely, 2^257162201 is an apocalyptic number.

It is an amenable number.

257162201 is a deficient number, since it is larger than the sum of its proper divisors (4852171).

257162201 is an equidigital number, since it uses as much as digits as its factorization.

257162201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852170.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 257162201 is about 16036.2776541191. The cubic root of 257162201 is about 635.9198448950.

The spelling of 257162201 in words is "two hundred fifty-seven million, one hundred sixty-two thousand, two hundred one".