257170001 has 4 divisors (see below), whose sum is σ = 280549104. Its totient is φ = 233790900.

The previous prime is 257169953. The next prime is 257170003. The reversal of 257170001 is 100071752.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 257170001 - 2¹⁸ = 256907857 is a prime.

It is a super-2 number, since 2×257170001² = 132272818828680002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257170003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11689535 + ... + 11689556.

It is an arithmetic number, because the mean of its divisors is an integer number (70137276).

Almost surely, 2^257170001 is an apocalyptic number.

It is an amenable number.

257170001 is a deficient number, since it is larger than the sum of its proper divisors (23379103).

257170001 is a wasteful number, since it uses less digits than its factorization.

257170001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23379102.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 257170001 is about 16036.5208508579. The cubic root of 257170001 is about 635.9262742025.

The spelling of 257170001 in words is "two hundred fifty-seven million, one hundred seventy thousand, one".