57081436 has 12 divisors (see below), whose sum is σ = 100121112. Its totient is φ = 28475408.

The previous prime is 57081433. The next prime is 57081439. The reversal of 57081436 is 63418075.

It is an interprime number because it is at equal distance from previous prime (57081433) and next prime (57081439).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57081433) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 14335 + ... + 17878.

It is an arithmetic number, because the mean of its divisors is an integer number (8343426).

Almost surely, 2^57081436 is an apocalyptic number.

It is an amenable number.

57081436 is a deficient number, since it is larger than the sum of its proper divisors (43039676).

57081436 is a wasteful number, since it uses less digits than its factorization.

57081436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32660 (or 32658 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 57081436 is about 7555.2257411675. The cubic root of 57081436 is about 385.0333045906.

The spelling of 57081436 in words is "fifty-seven million, eighty-one thousand, four hundred thirty-six".