57290978 has 4 divisors (see below), whose sum is σ = 85936470. Its totient is φ = 28645488.

The previous prime is 57290971. The next prime is 57290983. The reversal of 57290978 is 87909275.

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., 52809289 + 4481689 = 7267^2 + 2117^2 .

It is not an unprimeable number, because it can be changed into a prime (57290971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14322743 + ... + 14322746.

Almost surely, 2^57290978 is an apocalyptic number.

57290978 is a deficient number, since it is larger than the sum of its proper divisors (28645492).

57290978 is a wasteful number, since it uses less digits than its factorization.

57290978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28645491.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 57290978 is about 7569.0803932842. The cubic root of 57290978 is about 385.5038727873.

The spelling of 57290978 in words is "fifty-seven million, two hundred ninety thousand, nine hundred seventy-eight".