257048723 has 4 divisors (see below), whose sum is σ = 257153208. Its totient is φ = 256944240.

The previous prime is 257048719. The next prime is 257048741. The reversal of 257048723 is 327840752.

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

It is a cyclic number.

It is not a de Polignac number, because 257048723 - 2² = 257048719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257048773) 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, 48461 + ... + 53502.

It is an arithmetic number, because the mean of its divisors is an integer number (64288302).

Almost surely, 2^257048723 is an apocalyptic number.

257048723 is a deficient number, since it is larger than the sum of its proper divisors (104485).

257048723 is a wasteful number, since it uses less digits than its factorization.

257048723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104484.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 257048723 is about 16032.7390984822. The cubic root of 257048723 is about 635.8262936539.

The spelling of 257048723 in words is "two hundred fifty-seven million, forty-eight thousand, seven hundred twenty-three".