56396121 has 4 divisors (see below), whose sum is σ = 75194832. Its totient is φ = 37597412.

The previous prime is 56396117. The next prime is 56396141. The reversal of 56396121 is 12169365.

It is a happy number.

56396121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56396121 - 2² = 56396117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56396101) 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 3 ways as a sum of consecutive naturals, for example, 9399351 + ... + 9399356.

It is an arithmetic number, because the mean of its divisors is an integer number (18798708).

Almost surely, 2^56396121 is an apocalyptic number.

It is an amenable number.

56396121 is a deficient number, since it is larger than the sum of its proper divisors (18798711).

56396121 is a wasteful number, since it uses less digits than its factorization.

56396121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18798710.

The product of its digits is 9720, while the sum is 33.

The square root of 56396121 is about 7509.7350818787. The cubic root of 56396121 is about 383.4862038466.

The spelling of 56396121 in words is "fifty-six million, three hundred ninety-six thousand, one hundred twenty-one".