56493729 has 12 divisors (see below), whose sum is σ = 82520100. Its totient is φ = 37238784.

The previous prime is 56493721. The next prime is 56493733. The reversal of 56493729 is 92739465.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20493729 + 36000000 = 4527^2 + 6000^2 .

It is not a de Polignac number, because 56493729 - 2³ = 56493721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56493721) 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, 34464 + ... + 36065.

It is an arithmetic number, because the mean of its divisors is an integer number (6876675).

Almost surely, 2^56493729 is an apocalyptic number.

It is an amenable number.

56493729 is a deficient number, since it is larger than the sum of its proper divisors (26026371).

56493729 is a wasteful number, since it uses less digits than its factorization.

56493729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70624 (or 70621 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 56493729 is about 7516.2310368961. The cubic root of 56493729 is about 383.7073168511.

The spelling of 56493729 in words is "fifty-six million, four hundred ninety-three thousand, seven hundred twenty-nine".