56475690 has 64 divisors (see below), whose sum is σ = 141111936. Its totient is φ = 14452992.

The previous prime is 56475667. The next prime is 56475697. The reversal of 56475690 is 9657465.

It is a super-2 number, since 2×56475690² = 6379007121952200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56475697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91824 + ... + 92436.

It is an arithmetic number, because the mean of its divisors is an integer number (2204874).

Almost surely, 2^56475690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56475690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70555968).

56475690 is an abundant number, since it is smaller than the sum of its proper divisors (84636246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56475690 is a wasteful number, since it uses less digits than its factorization.

56475690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 56475690 is about 7515.0309380601. The cubic root of 56475690 is about 383.6664720042. Note that the first 3 decimals are identical.

The spelling of 56475690 in words is "fifty-six million, four hundred seventy-five thousand, six hundred ninety".