57287750 has 32 divisors (see below), whose sum is σ = 115498656. Its totient is φ = 21151200.

The previous prime is 57287749. The next prime is 57287777. The reversal of 57287750 is 5778275.

It is a junction number, because it is equal to n+sod(n) for n = 57287698 and 57287707.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5564 + ... + 12063.

It is an arithmetic number, because the mean of its divisors is an integer number (3609333).

Almost surely, 2^57287750 is an apocalyptic number.

57287750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57287750 is an abundant number, since it is smaller than the sum of its proper divisors (58210906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57287750 is a wasteful number, since it uses less digits than its factorization.

57287750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17657 (or 17647 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 41.

The square root of 57287750 is about 7568.8671543369. The cubic root of 57287750 is about 385.4966323810.

The spelling of 57287750 in words is "fifty-seven million, two hundred eighty-seven thousand, seven hundred fifty".