56495281 has 4 divisors (see below), whose sum is σ = 56524132. Its totient is φ = 56466432.

The previous prime is 56495279. The next prime is 56495321. The reversal of 56495281 is 18259465.

56495281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12816400 + 43678881 = 3580^2 + 6609^2 .

It is a cyclic number.

It is not a de Polignac number, because 56495281 - 2¹ = 56495279 is a prime.

It is a super-2 number, since 2×56495281² = 6383433550537922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56499281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11256 + ... + 15481.

It is an arithmetic number, because the mean of its divisors is an integer number (14131033).

Almost surely, 2^56495281 is an apocalyptic number.

It is an amenable number.

56495281 is a deficient number, since it is larger than the sum of its proper divisors (28851).

56495281 is a wasteful number, since it uses less digits than its factorization.

56495281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28850.

The product of its digits is 86400, while the sum is 40.

The square root of 56495281 is about 7516.3342794211. The cubic root of 56495281 is about 383.7108305645.

The spelling of 56495281 in words is "fifty-six million, four hundred ninety-five thousand, two hundred eighty-one".