157779976 has 16 divisors (see below), whose sum is σ = 297724140. Its totient is φ = 78386880.

The previous prime is 157779967. The next prime is 157779991. The reversal of 157779976 is 679977751.

It can be written as a sum of positive squares in 2 ways, for example, as 150651076 + 7128900 = 12274^2 + 2670^2 .

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 157779976.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61555 + ... + 64066.

Almost surely, 2^157779976 is an apocalyptic number.

It is an amenable number.

157779976 is a deficient number, since it is larger than the sum of its proper divisors (139944164).

157779976 is a wasteful number, since it uses less digits than its factorization.

157779976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125784 (or 125780 counting only the distinct ones).

The product of its digits is 5834430, while the sum is 58.

The square root of 157779976 is about 12561.0499561143. The cubic root of 157779976 is about 540.3609566571.

The spelling of 157779976 in words is "one hundred fifty-seven million, seven hundred seventy-nine thousand, nine hundred seventy-six".