56831402 has 4 divisors (see below), whose sum is σ = 85247106. Its totient is φ = 28415700.

The previous prime is 56831389. The next prime is 56831419. The reversal of 56831402 is 20413865.

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., 36590401 + 20241001 = 6049^2 + 4499^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14207849 + ... + 14207852.

Almost surely, 2^56831402 is an apocalyptic number.

56831402 is a deficient number, since it is larger than the sum of its proper divisors (28415704).

56831402 is a wasteful number, since it uses less digits than its factorization.

56831402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28415703.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 56831402 is about 7538.6604910952. The cubic root of 56831402 is about 384.4702941906.

The spelling of 56831402 in words is "fifty-six million, eight hundred thirty-one thousand, four hundred two".