56445613 has 8 divisors (see below), whose sum is σ = 64567040. Its totient is φ = 48338640.

The previous prime is 56445589. The next prime is 56445619. The reversal of 56445613 is 31654465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56445613 - 2⁵ = 56445581 is a prime.

It is a super-2 number, since 2×56445613² = 6372214453891538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56445619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6748 + ... + 12586.

It is an arithmetic number, because the mean of its divisors is an integer number (8070880).

Almost surely, 2^56445613 is an apocalyptic number.

It is an amenable number.

56445613 is a deficient number, since it is larger than the sum of its proper divisors (8121427).

56445613 is a wasteful number, since it uses less digits than its factorization.

56445613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7227.

The product of its digits is 43200, while the sum is 34.

The square root of 56445613 is about 7513.0295487240. The cubic root of 56445613 is about 383.5983507435.

The spelling of 56445613 in words is "fifty-six million, four hundred forty-five thousand, six hundred thirteen".