257045570 has 8 divisors (see below), whose sum is σ = 462682044. Its totient is φ = 102818224.

The previous prime is 257045561. The next prime is 257045573. The reversal of 257045570 is 75540752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 239042521 + 18003049 = 15461^2 + 4243^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 257045570.

It is not an unprimeable number, because it can be changed into a prime (257045573) 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, 12852269 + ... + 12852288.

Almost surely, 2^257045570 is an apocalyptic number.

257045570 is a deficient number, since it is larger than the sum of its proper divisors (205636474).

257045570 is a wasteful number, since it uses less digits than its factorization.

257045570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25704564.

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 257045570 is about 16032.6407681330. The cubic root of 257045570 is about 635.8236939282.

The spelling of 257045570 in words is "two hundred fifty-seven million, forty-five thousand, five hundred seventy".