257413045 has 8 divisors (see below), whose sum is σ = 325153440. Its totient is φ = 195091920.

The previous prime is 257413027. The next prime is 257413087. The reversal of 257413045 is 540314752.

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

It is a de Polignac number, because none of the positive numbers 2^k-257413045 is a prime.

It is a super-2 number, since 2×257413045² = 132522951472344050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257412998 and 257413016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1354711 + ... + 1354900.

It is an arithmetic number, because the mean of its divisors is an integer number (40644180).

Almost surely, 2^257413045 is an apocalyptic number.

It is an amenable number.

257413045 is a deficient number, since it is larger than the sum of its proper divisors (67740395).

257413045 is a wasteful number, since it uses less digits than its factorization.

257413045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709635.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 257413045 is about 16044.0968895105. The cubic root of 257413045 is about 636.1265430271.

Adding to 257413045 its reverse (540314752), we get a palindrome (797727797).

The spelling of 257413045 in words is "two hundred fifty-seven million, four hundred thirteen thousand, forty-five".