56122402157 has 4 divisors (see below), whose sum is σ = 57491241276. Its totient is φ = 54753563040.

The previous prime is 56122402153. The next prime is 56122402159. The reversal of 56122402157 is 75120422165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7608375076 + 48514027081 = 87226^2 + 220259^2 .

It is a cyclic number.

It is not a de Polignac number, because 56122402157 - 2² = 56122402153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56122402151) 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, 684419498 + ... + 684419579.

It is an arithmetic number, because the mean of its divisors is an integer number (14372810319).

Almost surely, 2^56122402157 is an apocalyptic number.

It is an amenable number.

56122402157 is a deficient number, since it is larger than the sum of its proper divisors (1368839119).

56122402157 is a wasteful number, since it uses less digits than its factorization.

56122402157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368839118.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 56122402157 in words is "fifty-six billion, one hundred twenty-two million, four hundred two thousand, one hundred fifty-seven".