57552690 has 32 divisors (see below), whose sum is σ = 148752576. Its totient is φ = 14166720.

The previous prime is 57552683. The next prime is 57552697. The reversal of 57552690 is 9625575.

It is an interprime number because it is at equal distance from previous prime (57552683) and next prime (57552697).

It is a super-2 number, since 2×57552690² = 6624624252472200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (57552697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73396 + ... + 74175.

It is an arithmetic number, because the mean of its divisors is an integer number (4648518).

Almost surely, 2^57552690 is an apocalyptic number.

57552690 is an abundant number, since it is smaller than the sum of its proper divisors (91199886).

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

57552690 is a wasteful number, since it uses less digits than its factorization.

57552690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147594.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 57552690 is about 7586.3489242191. The cubic root of 57552690 is about 386.0899903834.

The spelling of 57552690 in words is "fifty-seven million, five hundred fifty-two thousand, six hundred ninety".