57451140 has 48 divisors (see below), whose sum is σ = 178738560. Its totient is φ = 15320160.

The previous prime is 57451133. The next prime is 57451159. The reversal of 57451140 is 4115475.

It is a happy number.

57451140 is a `hidden beast` number, since 574 + 51 + 1 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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, 52656 + ... + 53735.

It is an arithmetic number, because the mean of its divisors is an integer number (3723720).

Almost surely, 2^57451140 is an apocalyptic number.

It is an amenable number.

57451140 is an abundant number, since it is smaller than the sum of its proper divisors (121287420).

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

57451140 is a wasteful number, since it uses less digits than its factorization.

57451140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106409 (or 106401 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 57451140 is about 7579.6530263595. The cubic root of 57451140 is about 385.8627752797.

The spelling of 57451140 in words is "fifty-seven million, four hundred fifty-one thousand, one hundred forty".