56398537 has 8 divisors (see below), whose sum is σ = 64309896. Its totient is φ = 48997632.

The previous prime is 56398487. The next prime is 56398547. The reversal of 56398537 is 73589365.

56398537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13456 + 56385081 = 116^2 + 7509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56398537 - 2⁷ = 56398409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56398547) 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 7 ways as a sum of consecutive naturals, for example, 127378 + ... + 127819.

It is an arithmetic number, because the mean of its divisors is an integer number (8038737).

Almost surely, 2^56398537 is an apocalyptic number.

It is an amenable number.

56398537 is a deficient number, since it is larger than the sum of its proper divisors (7911359).

56398537 is a wasteful number, since it uses less digits than its factorization.

56398537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255227.

The product of its digits is 680400, while the sum is 46.

The square root of 56398537 is about 7509.8959380274. The cubic root of 56398537 is about 383.4916799291.

The spelling of 56398537 in words is "fifty-six million, three hundred ninety-eight thousand, five hundred thirty-seven".