57531386 has 12 divisors (see below), whose sum is σ = 94855866. Its totient is φ = 26150520.

The previous prime is 57531347. The next prime is 57531391. The reversal of 57531386 is 68313575.

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 755161 = 7535^2 + 869^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118625 + ... + 119108.

Almost surely, 2^57531386 is an apocalyptic number.

57531386 is a deficient number, since it is larger than the sum of its proper divisors (37324480).

57531386 is a wasteful number, since it uses less digits than its factorization.

57531386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237757 (or 237746 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 57531386 is about 7584.9446932723. The cubic root of 57531386 is about 386.0423454846.

The spelling of 57531386 in words is "fifty-seven million, five hundred thirty-one thousand, three hundred eighty-six".