56097729 has 12 divisors (see below), whose sum is σ = 81099876. Its totient is φ = 37366272.

The previous prime is 56097721. The next prime is 56097733. The reversal of 56097729 is 92779065.

It can be written as a sum of positive squares in 2 ways, for example, as 29811600 + 26286129 = 5460^2 + 5127^2 .

It is not a de Polignac number, because 56097729 - 2³ = 56097721 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56097721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13437 + ... + 17109.

It is an arithmetic number, because the mean of its divisors is an integer number (6758323).

Almost surely, 2^56097729 is an apocalyptic number.

It is an amenable number.

56097729 is a deficient number, since it is larger than the sum of its proper divisors (25002147).

56097729 is a wasteful number, since it uses less digits than its factorization.

56097729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376 (or 5373 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 56097729 is about 7489.8417206240. The cubic root of 56097729 is about 382.8086653699.

It can be divided in two parts, 560 and 97729, that added together give a palindrome (98289).

The spelling of 56097729 in words is "fifty-six million, ninety-seven thousand, seven hundred twenty-nine".