56891045 has 16 divisors (see below), whose sum is σ = 71677440. Its totient is φ = 43291200.

The previous prime is 56891041. The next prime is 56891053. The reversal of 56891045 is 54019865.

It is not a de Polignac number, because 56891045 - 2² = 56891041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56891041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6035 + ... + 12255.

It is an arithmetic number, because the mean of its divisors is an integer number (4479840).

Almost surely, 2^56891045 is an apocalyptic number.

It is an amenable number.

56891045 is a deficient number, since it is larger than the sum of its proper divisors (14786395).

56891045 is a wasteful number, since it uses less digits than its factorization.

56891045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6316.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 56891045 is about 7542.6152626261. The cubic root of 56891045 is about 384.6047441826.

The spelling of 56891045 in words is "fifty-six million, eight hundred ninety-one thousand, forty-five".