56031645 has 8 divisors (see below), whose sum is σ = 89650656. Its totient is φ = 29883536.

The previous prime is 56031637. The next prime is 56031667. The reversal of 56031645 is 54613065.

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

It is a cyclic number.

It is not a de Polignac number, because 56031645 - 2³ = 56031637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1867707 + ... + 1867736.

It is an arithmetic number, because the mean of its divisors is an integer number (11206332).

Almost surely, 2^56031645 is an apocalyptic number.

It is an amenable number.

56031645 is a deficient number, since it is larger than the sum of its proper divisors (33619011).

56031645 is a wasteful number, since it uses less digits than its factorization.

56031645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735451.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 56031645 is about 7485.4288454303. The cubic root of 56031645 is about 382.6582881120.

The spelling of 56031645 in words is "fifty-six million, thirty-one thousand, six hundred forty-five".