57109536 has 120 divisors (see below), whose sum is σ = 183317904. Its totient is φ = 17297280.

The previous prime is 57109531. The next prime is 57109543. The reversal of 57109536 is 63590175.

It is a happy number.

It is a super-2 number, since 2×57109536² = 6522998204270592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 57109536.

It is not an unprimeable number, because it can be changed into a prime (57109531) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27511 + ... + 29513.

Almost surely, 2^57109536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57109536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91658952).

57109536 is an abundant number, since it is smaller than the sum of its proper divisors (126208368).

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

57109536 is a wasteful number, since it uses less digits than its factorization.

57109536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036 (or 2019 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 57109536 is about 7557.0851523587. The cubic root of 57109536 is about 385.0964755134.

The spelling of 57109536 in words is "fifty-seven million, one hundred nine thousand, five hundred thirty-six".