57543690 has 32 divisors (see below), whose sum is σ = 140714496. Its totient is φ = 15055040.

The previous prime is 57543683. The next prime is 57543697. The reversal of 57543690 is 9634575.

It is an interprime number because it is at equal distance from previous prime (57543683) and next prime (57543697).

It is a super-2 number, since 2×57543690² = 6622552517632200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57543697) by changing a digit.

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, 16506 + ... + 19685.

It is an arithmetic number, because the mean of its divisors is an integer number (4397328).

Almost surely, 2^57543690 is an apocalyptic number.

57543690 is an abundant number, since it is smaller than the sum of its proper divisors (83170806).

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

57543690 is a wasteful number, since it uses less digits than its factorization.

57543690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36254.

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 57543690 is about 7585.7557303145. The cubic root of 57543690 is about 386.0698639505.

The spelling of 57543690 in words is "fifty-seven million, five hundred forty-three thousand, six hundred ninety".