56722031 has 8 divisors (see below), whose sum is σ = 59138640. Its totient is φ = 54355392.

The previous prime is 56722021. The next prime is 56722063. The reversal of 56722031 is 13022765.

56722031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56722031 is a prime.

It is a super-2 number, since 2×56722031² = 6434777601529922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56722021) 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, 10166 + ... + 14723.

It is an arithmetic number, because the mean of its divisors is an integer number (7392330).

Almost surely, 2^56722031 is an apocalyptic number.

56722031 is a deficient number, since it is larger than the sum of its proper divisors (2416609).

56722031 is a wasteful number, since it uses less digits than its factorization.

56722031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24985.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 56722031 is about 7531.4029901473. The cubic root of 56722031 is about 384.2235004422.

Adding to 56722031 its reverse (13022765), we get a palindrome (69744796).

The spelling of 56722031 in words is "fifty-six million, seven hundred twenty-two thousand, thirty-one".