56212993 has 4 divisors (see below), whose sum is σ = 56983108. Its totient is φ = 55442880.

The previous prime is 56212979. The next prime is 56213021. The reversal of 56212993 is 39921265.

56212993 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 an emirpimes, since its reverse is a distinct semiprime: 39921265 = 5 ⋅7984253.

It can be written as a sum of positive squares in 2 ways, for example, as 9659664 + 46553329 = 3108^2 + 6823^2 .

It is a cyclic number.

It is not a de Polignac number, because 56212993 - 2²⁵ = 22658561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56212193) 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, 384948 + ... + 385093.

It is an arithmetic number, because the mean of its divisors is an integer number (14245777).

Almost surely, 2^56212993 is an apocalyptic number.

It is an amenable number.

56212993 is a deficient number, since it is larger than the sum of its proper divisors (770115).

56212993 is an equidigital number, since it uses as much as digits as its factorization.

56212993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770114.

The product of its digits is 29160, while the sum is 37.

The square root of 56212993 is about 7497.5324607500. The cubic root of 56212993 is about 383.0706716500.

The spelling of 56212993 in words is "fifty-six million, two hundred twelve thousand, nine hundred ninety-three".