56522231 has 4 divisors (see below), whose sum is σ = 57900864. Its totient is φ = 55143600.

The previous prime is 56522203. The next prime is 56522237. The reversal of 56522231 is 13222565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13222565 = 5 ⋅2644513.

It is a cyclic number.

It is not a de Polignac number, because 56522231 - 2¹⁰ = 56521207 is a prime.

It is a super-2 number, since 2×56522231² = 6389525194434722, which contains 22 as substring.

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 56522231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56522237) 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, 689255 + ... + 689336.

It is an arithmetic number, because the mean of its divisors is an integer number (14475216).

Almost surely, 2^56522231 is an apocalyptic number.

56522231 is a deficient number, since it is larger than the sum of its proper divisors (1378633).

56522231 is a wasteful number, since it uses less digits than its factorization.

56522231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378632.

The product of its digits is 3600, while the sum is 26.

The square root of 56522231 is about 7518.1268278741. The cubic root of 56522231 is about 383.7718348514.

Adding to 56522231 its reverse (13222565), we get a palindrome (69744796).

The spelling of 56522231 in words is "fifty-six million, five hundred twenty-two thousand, two hundred thirty-one".