257517332 has 12 divisors (see below), whose sum is σ = 466195380. Its totient is φ = 124318656.

The previous prime is 257517331. The next prime is 257517347. The reversal of 257517332 is 233715752.

It can be written as a sum of positive squares in 2 ways, for example, as 75968656 + 181548676 = 8716^2 + 13474^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257517292 and 257517301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257517331) 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, 1109873 + ... + 1110104.

It is an arithmetic number, because the mean of its divisors is an integer number (38849615).

Almost surely, 2^257517332 is an apocalyptic number.

It is an amenable number.

257517332 is a deficient number, since it is larger than the sum of its proper divisors (208678048).

257517332 is a wasteful number, since it uses less digits than its factorization.

257517332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220010 (or 2220008 counting only the distinct ones).

The product of its digits is 44100, while the sum is 35.

The square root of 257517332 is about 16047.3465719414. The cubic root of 257517332 is about 636.2124371096.

The spelling of 257517332 in words is "two hundred fifty-seven million, five hundred seventeen thousand, three hundred thirty-two".