56281653 has 6 divisors (see below), whose sum is σ = 81295734. Its totient is φ = 37521096.

The previous prime is 56281649. The next prime is 56281669. The reversal of 56281653 is 35618265.

It can be written as a sum of positive squares in only one way, i.e., 52664049 + 3617604 = 7257^2 + 1902^2 .

It is not a de Polignac number, because 56281653 - 2² = 56281649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56281633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3126750 + ... + 3126767.

It is an arithmetic number, because the mean of its divisors is an integer number (13549289).

Almost surely, 2^56281653 is an apocalyptic number.

It is an amenable number.

56281653 is a deficient number, since it is larger than the sum of its proper divisors (25014081).

56281653 is a wasteful number, since it uses less digits than its factorization.

56281653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6253523 (or 6253520 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 56281653 is about 7502.1099032206. The cubic root of 56281653 is about 383.2265723275.

It can be divided in two parts, 562 and 81653, that added together give a triangular number (82215 = T₄₀₅).

The spelling of 56281653 in words is "fifty-six million, two hundred eighty-one thousand, six hundred fifty-three".