56562121 has 24 divisors (see below), whose sum is σ = 72558720. Its totient is φ = 43596000.

The previous prime is 56562113. The next prime is 56562131. The reversal of 56562121 is 12126565.

It is not a de Polignac number, because 56562121 - 2³ = 56562113 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 56562121.

It is not an unprimeable number, because it can be changed into a prime (56562131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53920 + ... + 54958.

It is an arithmetic number, because the mean of its divisors is an integer number (3023280).

Almost surely, 2^56562121 is an apocalyptic number.

It is an amenable number.

56562121 is a deficient number, since it is larger than the sum of its proper divisors (15996599).

56562121 is a wasteful number, since it uses less digits than its factorization.

56562121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165 (or 1158 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 56562121 is about 7520.7792814309. The cubic root of 56562121 is about 383.8620946678.

Adding to 56562121 its reverse (12126565), we get a palindrome (68688686).

Subtracting from 56562121 its reverse (12126565), we obtain a square (44435556 = 6666²).

It can be divided in two parts, 5656 and 2121, that added together give a palindrome (7777).

The spelling of 56562121 in words is "fifty-six million, five hundred sixty-two thousand, one hundred twenty-one".