56455281 has 12 divisors (see below), whose sum is σ = 82463940. Its totient is φ = 37213440.

The previous prime is 56455241. The next prime is 56455291. The reversal of 56455281 is 18255465.

56455281 is a `hidden beast` number, since 5 + 645 + 5 + 2 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37454400 + 19000881 = 6120^2 + 4359^2 .

It is not a de Polignac number, because 56455281 - 2¹⁴ = 56438897 is a prime.

It is a super-2 number, since 2×56455281² = 6374397505577922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56455241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34440 + ... + 36041.

It is an arithmetic number, because the mean of its divisors is an integer number (6871995).

Almost surely, 2^56455281 is an apocalyptic number.

It is an amenable number.

56455281 is a deficient number, since it is larger than the sum of its proper divisors (26008659).

56455281 is a wasteful number, since it uses less digits than its factorization.

56455281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70576 (or 70573 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 56455281 is about 7513.6729367201. The cubic root of 56455281 is about 383.6202503913.

The spelling of 56455281 in words is "fifty-six million, four hundred fifty-five thousand, two hundred eighty-one".