57157786 has 16 divisors (see below), whose sum is σ = 98086464. Its totient is φ = 24470784.

The previous prime is 57157733. The next prime is 57157787. The reversal of 57157786 is 68775175.

It is not an unprimeable number, because it can be changed into a prime (57157787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19386 + ... + 22138.

It is an arithmetic number, because the mean of its divisors is an integer number (6130404).

Almost surely, 2^57157786 is an apocalyptic number.

57157786 is a deficient number, since it is larger than the sum of its proper divisors (40928678).

57157786 is a wasteful number, since it uses less digits than its factorization.

57157786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245.

The product of its digits is 411600, while the sum is 46.

The square root of 57157786 is about 7560.2768467828. The cubic root of 57157786 is about 385.2048968378.

The spelling of 57157786 in words is "fifty-seven million, one hundred fifty-seven thousand, seven hundred eighty-six".