57347986 has 4 divisors (see below), whose sum is σ = 86021982. Its totient is φ = 28673992.

The previous prime is 57347977. The next prime is 57347999. The reversal of 57347986 is 68974375.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 56715961 + 632025 = 7531^2 + 795^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14336995 + ... + 14336998.

Almost surely, 2^57347986 is an apocalyptic number.

57347986 is a deficient number, since it is larger than the sum of its proper divisors (28673996).

57347986 is a wasteful number, since it uses less digits than its factorization.

57347986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28673995.

The product of its digits is 1270080, while the sum is 49.

The square root of 57347986 is about 7572.8453041113. The cubic root of 57347986 is about 385.6316969820.

The spelling of 57347986 in words is "fifty-seven million, three hundred forty-seven thousand, nine hundred eighty-six".