56445785 has 16 divisors (see below), whose sum is σ = 74483712. Its totient is φ = 40723200.

The previous prime is 56445773. The next prime is 56445787. The reversal of 56445785 is 58754465.

It is not a de Polignac number, because 56445785 - 2⁶ = 56445721 is a prime.

It is a super-2 number, since 2×56445785² = 6372253288532450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56445787) 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, 2945 + ... + 11025.

It is an arithmetic number, because the mean of its divisors is an integer number (4655232).

Almost surely, 2^56445785 is an apocalyptic number.

56445785 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56445785 is a deficient number, since it is larger than the sum of its proper divisors (18037927).

56445785 is a wasteful number, since it uses less digits than its factorization.

56445785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8224.

The product of its digits is 672000, while the sum is 44.

The square root of 56445785 is about 7513.0409954958. The cubic root of 56445785 is about 383.5987403743.

The spelling of 56445785 in words is "fifty-six million, four hundred forty-five thousand, seven hundred eighty-five".