56979743 has 4 divisors (see below), whose sum is σ = 57085608. Its totient is φ = 56873880.

The previous prime is 56979737. The next prime is 56979757. The reversal of 56979743 is 34797965.

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 56979743 - 2⁶ = 56979679 is a prime.

It is a super-2 number, since 2×56979743² = 6493382224692098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56979691 and 56979700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56979443) 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, 52121 + ... + 53202.

It is an arithmetic number, because the mean of its divisors is an integer number (14271402).

Almost surely, 2^56979743 is an apocalyptic number.

56979743 is a deficient number, since it is larger than the sum of its proper divisors (105865).

56979743 is a wasteful number, since it uses less digits than its factorization.

56979743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105864.

The product of its digits is 1428840, while the sum is 50.

The square root of 56979743 is about 7548.4927634595. The cubic root of 56979743 is about 384.8045176163.

The spelling of 56979743 in words is "fifty-six million, nine hundred seventy-nine thousand, seven hundred forty-three".