56291331956 has 24 divisors (see below), whose sum is σ = 100941925896. Its totient is φ = 27451182080.

The previous prime is 56291331953. The next prime is 56291331983. The reversal of 56291331956 is 65913319265.

It can be written as a sum of positive squares in 4 ways, for example, as 8268992356 + 48022339600 = 90934^2 + 219140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56291331953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535100 + ... + 631596.

It is an arithmetic number, because the mean of its divisors is an integer number (4205913579).

Almost surely, 2^56291331956 is an apocalyptic number.

It is an amenable number.

56291331956 is a deficient number, since it is larger than the sum of its proper divisors (44650593940).

56291331956 is a wasteful number, since it uses less digits than its factorization.

56291331956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100099 (or 100097 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 50.

The spelling of 56291331956 in words is "fifty-six billion, two hundred ninety-one million, three hundred thirty-one thousand, nine hundred fifty-six".