56616437 has 4 divisors (see below), whose sum is σ = 56859660. Its totient is φ = 56373216.

The previous prime is 56616433. The next prime is 56616451. The reversal of 56616437 is 73461665.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73461665 = 5 ⋅14692333.

It can be written as a sum of positive squares in 2 ways, for example, as 3530641 + 53085796 = 1879^2 + 7286^2 .

It is a cyclic number.

It is not a de Polignac number, because 56616437 - 2² = 56616433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56616437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56616433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121262 + ... + 121727.

It is an arithmetic number, because the mean of its divisors is an integer number (14214915).

Almost surely, 2^56616437 is an apocalyptic number.

It is an amenable number.

56616437 is a deficient number, since it is larger than the sum of its proper divisors (243223).

56616437 is a wasteful number, since it uses less digits than its factorization.

56616437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243222.

The product of its digits is 90720, while the sum is 38.

The square root of 56616437 is about 7524.3894768945. The cubic root of 56616437 is about 383.9849282460.

The spelling of 56616437 in words is "fifty-six million, six hundred sixteen thousand, four hundred thirty-seven".