56806437 has 4 divisors (see below), whose sum is σ = 75741920. Its totient is φ = 37870956.

The previous prime is 56806423. The next prime is 56806441. The reversal of 56806437 is 73460865.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56806437 - 2¹¹ = 56804389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56806395 and 56806404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56806487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9467737 + ... + 9467742.

It is an arithmetic number, because the mean of its divisors is an integer number (18935480).

Almost surely, 2^56806437 is an apocalyptic number.

It is an amenable number.

56806437 is a deficient number, since it is larger than the sum of its proper divisors (18935483).

56806437 is a wasteful number, since it uses less digits than its factorization.

56806437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18935482.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 56806437 is about 7537.0045110773. The cubic root of 56806437 is about 384.4139890122.

The spelling of 56806437 in words is "fifty-six million, eight hundred six thousand, four hundred thirty-seven".