56481969 has 16 divisors (see below), whose sum is σ = 79640064. Its totient is φ = 35548800.

The previous prime is 56481967. The next prime is 56481977. The reversal of 56481969 is 96918465.

It is not a de Polignac number, because 56481969 - 2¹ = 56481967 is a prime.

It is a super-2 number, since 2×56481969² = 6380425644233922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56481961) 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, 3594 + ... + 11219.

It is an arithmetic number, because the mean of its divisors is an integer number (4977504).

Almost surely, 2^56481969 is an apocalyptic number.

It is an amenable number.

56481969 is a deficient number, since it is larger than the sum of its proper divisors (23158095).

56481969 is a wasteful number, since it uses less digits than its factorization.

56481969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14888.

The product of its digits is 466560, while the sum is 48.

The square root of 56481969 is about 7515.4486892001. The cubic root of 56481969 is about 383.6806902310.

The spelling of 56481969 in words is "fifty-six million, four hundred eighty-one thousand, nine hundred sixty-nine".