57851540 has 12 divisors (see below), whose sum is σ = 121488276. Its totient is φ = 23140608.

The previous prime is 57851531. The next prime is 57851579. The reversal of 57851540 is 4515875.

It can be written as a sum of positive squares in 2 ways, for example, as 16532356 + 41319184 = 4066^2 + 6428^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57851540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1446269 + ... + 1446308.

It is an arithmetic number, because the mean of its divisors is an integer number (10124023).

Almost surely, 2^57851540 is an apocalyptic number.

It is an amenable number.

57851540 is an abundant number, since it is smaller than the sum of its proper divisors (63636736).

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

57851540 is a wasteful number, since it uses less digits than its factorization.

57851540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892586 (or 2892584 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 57851540 is about 7606.0199841967. The cubic root of 57851540 is about 386.7571115548.

The spelling of 57851540 in words is "fifty-seven million, eight hundred fifty-one thousand, five hundred forty".