57402447 has 8 divisors (see below), whose sum is σ = 76632240. Its totient is φ = 38220480.

The previous prime is 57402437. The next prime is 57402469. The reversal of 57402447 is 74420475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57402447 - 2⁶ = 57402383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57402437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9054 + ... + 14027.

It is an arithmetic number, because the mean of its divisors is an integer number (9579030).

Almost surely, 2^57402447 is an apocalyptic number.

57402447 is a deficient number, since it is larger than the sum of its proper divisors (19229793).

57402447 is a wasteful number, since it uses less digits than its factorization.

57402447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23913.

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 57402447 is about 7576.4402591191. The cubic root of 57402447 is about 385.7537311609.

The spelling of 57402447 in words is "fifty-seven million, four hundred two thousand, four hundred forty-seven".