57775240 has 32 divisors (see below), whose sum is σ = 131463000. Its totient is φ = 22849024.

The previous prime is 57775217. The next prime is 57775243. The reversal of 57775240 is 4257775.

It can be written as a sum of positive squares in 4 ways, for example, as 52215076 + 5560164 = 7226^2 + 2358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57775240.

It is not an unprimeable number, because it can be changed into a prime (57775243) 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 7 ways as a sum of consecutive naturals, for example, 4555 + ... + 11674.

Almost surely, 2^57775240 is an apocalyptic number.

It is an amenable number.

57775240 is an abundant number, since it is smaller than the sum of its proper divisors (73687760).

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

57775240 is a wasteful number, since it uses less digits than its factorization.

57775240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16329 (or 16325 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 37.

The square root of 57775240 is about 7601.0025654515. The cubic root of 57775240 is about 386.5870063139.

The spelling of 57775240 in words is "fifty-seven million, seven hundred seventy-five thousand, two hundred forty".