56413639 has 4 divisors (see below), whose sum is σ = 56565256. Its totient is φ = 56262024.

The previous prime is 56413631. The next prime is 56413657. The reversal of 56413639 is 93631465.

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 56413639 - 2³ = 56413631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56413598 and 56413607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56413631) 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, 75249 + ... + 75994.

It is an arithmetic number, because the mean of its divisors is an integer number (14141314).

Almost surely, 2^56413639 is an apocalyptic number.

56413639 is a deficient number, since it is larger than the sum of its proper divisors (151617).

56413639 is a wasteful number, since it uses less digits than its factorization.

56413639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151616.

The product of its digits is 58320, while the sum is 37.

The square root of 56413639 is about 7510.9013440465. The cubic root of 56413639 is about 383.5259064345.

The spelling of 56413639 in words is "fifty-six million, four hundred thirteen thousand, six hundred thirty-nine".