56824121 has 4 divisors (see below), whose sum is σ = 56861952. Its totient is φ = 56786292.

The previous prime is 56824091. The next prime is 56824133. The reversal of 56824121 is 12142865.

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 a cyclic number.

It is not a de Polignac number, because 56824121 - 2¹⁰ = 56823097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56824151) 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, 16565 + ... + 19698.

It is an arithmetic number, because the mean of its divisors is an integer number (14215488).

Almost surely, 2^56824121 is an apocalyptic number.

It is an amenable number.

56824121 is a deficient number, since it is larger than the sum of its proper divisors (37831).

56824121 is a wasteful number, since it uses less digits than its factorization.

56824121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37830.

The product of its digits is 3840, while the sum is 29.

The square root of 56824121 is about 7538.1775649025. The cubic root of 56824121 is about 384.4538745841.

Adding to 56824121 its reverse (12142865), we get a palindrome (68966986).

The spelling of 56824121 in words is "fifty-six million, eight hundred twenty-four thousand, one hundred twenty-one".