56679491 has 4 divisors (see below), whose sum is σ = 61832184. Its totient is φ = 51526800.

The previous prime is 56679487. The next prime is 56679499. The reversal of 56679491 is 19497665.

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

It is a cyclic number.

It is not a de Polignac number, because 56679491 - 2² = 56679487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56679499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2576330 + ... + 2576351.

It is an arithmetic number, because the mean of its divisors is an integer number (15458046).

Almost surely, 2^56679491 is an apocalyptic number.

56679491 is a deficient number, since it is larger than the sum of its proper divisors (5152693).

56679491 is a wasteful number, since it uses less digits than its factorization.

56679491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152692.

The product of its digits is 408240, while the sum is 47.

The square root of 56679491 is about 7528.5782854401. The cubic root of 56679491 is about 384.1274239842.

The spelling of 56679491 in words is "fifty-six million, six hundred seventy-nine thousand, four hundred ninety-one".