56037397 has 4 divisors (see below), whose sum is σ = 60347980. Its totient is φ = 51726816.

The previous prime is 56037391. The next prime is 56037437. The reversal of 56037397 is 79373065.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16208676 + 39828721 = 4026^2 + 6311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56037397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56037391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2155272 + ... + 2155297.

It is an arithmetic number, because the mean of its divisors is an integer number (15086995).

Almost surely, 2^56037397 is an apocalyptic number.

It is an amenable number.

56037397 is a deficient number, since it is larger than the sum of its proper divisors (4310583).

56037397 is a wasteful number, since it uses less digits than its factorization.

56037397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310582.

The product of its (nonzero) digits is 119070, while the sum is 40.

The square root of 56037397 is about 7485.8130486942. The cubic root of 56037397 is about 382.6713817556.

The spelling of 56037397 in words is "fifty-six million, thirty-seven thousand, three hundred ninety-seven".