57575240 has 16 divisors (see below), whose sum is σ = 129544380. Its totient is φ = 23030080.

The previous prime is 57575207. The next prime is 57575251. The reversal of 57575240 is 4257575.

It is a happy number.

57575240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 57365476 + 209764 = 7574^2 + 458^2 .

It is a super-2 number, since 2×57575240² = 6629816522115200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57575240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719651 + ... + 719730.

Almost surely, 2^57575240 is an apocalyptic number.

It is an amenable number.

57575240 is an abundant number, since it is smaller than the sum of its proper divisors (71969140).

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

57575240 is a wasteful number, since it uses less digits than its factorization.

57575240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439392 (or 1439388 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 57575240 is about 7587.8350008418. The cubic root of 57575240 is about 386.1404090660.

The spelling of 57575240 in words is "fifty-seven million, five hundred seventy-five thousand, two hundred forty".