257579948 has 6 divisors (see below), whose sum is σ = 450764916. Its totient is φ = 128789972.

The previous prime is 257579939. The next prime is 257579951. The reversal of 257579948 is 849975752.

It is a super-2 number, since 2×257579948² = 132694859223365408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257579893 and 257579902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32197490 + ... + 32197497.

It is an arithmetic number, because the mean of its divisors is an integer number (75127486).

Almost surely, 2^257579948 is an apocalyptic number.

It is an amenable number.

257579948 is a deficient number, since it is larger than the sum of its proper divisors (193184968).

257579948 is a wasteful number, since it uses less digits than its factorization.

257579948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64394991 (or 64394989 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 56.

The square root of 257579948 is about 16049.2974301058. The cubic root of 257579948 is about 636.2639984929.

The spelling of 257579948 in words is "two hundred fifty-seven million, five hundred seventy-nine thousand, nine hundred forty-eight".