56236354121 has 4 divisors (see below), whose sum is σ = 56761927632. Its totient is φ = 55710780612.

The previous prime is 56236354061. The next prime is 56236354129. The reversal of 56236354121 is 12145363265.

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 56236354121 - 2²⁶ = 56169245257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56236354129) 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, 262786595 + ... + 262786808.

It is an arithmetic number, because the mean of its divisors is an integer number (14190481908).

Almost surely, 2^56236354121 is an apocalyptic number.

It is an amenable number.

56236354121 is a deficient number, since it is larger than the sum of its proper divisors (525573511).

56236354121 is a wasteful number, since it uses less digits than its factorization.

56236354121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525573510.

The product of its digits is 129600, while the sum is 38.

The spelling of 56236354121 in words is "fifty-six billion, two hundred thirty-six million, three hundred fifty-four thousand, one hundred twenty-one".