57291402 has 32 divisors (see below), whose sum is σ = 133742592. Its totient is φ = 16020144.

The previous prime is 57291397. The next prime is 57291427. The reversal of 57291402 is 20419275.

It is a self number, because there is not a number n which added to its sum of digits gives 57291402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12538 + ... + 16485.

It is an arithmetic number, because the mean of its divisors is an integer number (4179456).

Almost surely, 2^57291402 is an apocalyptic number.

57291402 is an abundant number, since it is smaller than the sum of its proper divisors (76451190).

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

57291402 is a wasteful number, since it uses less digits than its factorization.

57291402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29082.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 57291402 is about 7569.1084019189. The cubic root of 57291402 is about 385.5048237994.

The spelling of 57291402 in words is "fifty-seven million, two hundred ninety-one thousand, four hundred two".