56837222881 has 4 divisors (see below), whose sum is σ = 57399967764. Its totient is φ = 56274478000.

The previous prime is 56837222879. The next prime is 56837222887. The reversal of 56837222881 is 18822273865.

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 36666122256 + 20171100625 = 191484^2 + 142025^2 .

It is a cyclic number.

It is not a de Polignac number, because 56837222881 - 2¹ = 56837222879 is a prime.

It is a super-2 number, since 2×56837222881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56837222887) 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, 281372290 + ... + 281372491.

It is an arithmetic number, because the mean of its divisors is an integer number (14349991941).

Almost surely, 2^56837222881 is an apocalyptic number.

It is an amenable number.

56837222881 is a deficient number, since it is larger than the sum of its proper divisors (562744883).

56837222881 is a wasteful number, since it uses less digits than its factorization.

56837222881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562744882.

The product of its digits is 2580480, while the sum is 52.

The spelling of 56837222881 in words is "fifty-six billion, eight hundred thirty-seven million, two hundred twenty-two thousand, eight hundred eighty-one".