57061566 has 24 divisors (see below), whose sum is σ = 124861464. Its totient is φ = 18831600.

The previous prime is 57061523. The next prime is 57061577. The reversal of 57061566 is 66516075.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 57061566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13876 + ... + 17511.

It is an arithmetic number, because the mean of its divisors is an integer number (5202561).

Almost surely, 2^57061566 is an apocalyptic number.

57061566 is an abundant number, since it is smaller than the sum of its proper divisors (67799898).

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

57061566 is a wasteful number, since it uses less digits than its factorization.

57061566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31496 (or 31493 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 57061566 is about 7553.9106428392. The cubic root of 57061566 is about 384.9886228155.

The spelling of 57061566 in words is "fifty-seven million, sixty-one thousand, five hundred sixty-six".