57449402 has 4 divisors (see below), whose sum is σ = 86174106. Its totient is φ = 28724700.

The previous prime is 57449347. The next prime is 57449461. The reversal of 57449402 is 20494475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37100281 + 20349121 = 6091^2 + 4511^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14362349 + ... + 14362352.

Almost surely, 2^57449402 is an apocalyptic number.

57449402 is a deficient number, since it is larger than the sum of its proper divisors (28724704).

57449402 is a wasteful number, since it uses less digits than its factorization.

57449402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28724703.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 57449402 is about 7579.5383764448. The cubic root of 57449402 is about 385.8588842268.

The spelling of 57449402 in words is "fifty-seven million, four hundred forty-nine thousand, four hundred two".