56531241940 has 12 divisors (see below), whose sum is σ = 118715608116. Its totient is φ = 22612496768.

The previous prime is 56531241917. The next prime is 56531241947. The reversal of 56531241940 is 4914213565.

It can be written as a sum of positive squares in 2 ways, for example, as 41413064004 + 15118177936 = 203502^2 + 122956^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56531241893 and 56531241902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56531241947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1413281029 + ... + 1413281068.

It is an arithmetic number, because the mean of its divisors is an integer number (9892967343).

Almost surely, 2^56531241940 is an apocalyptic number.

It is an amenable number.

56531241940 is an abundant number, since it is smaller than the sum of its proper divisors (62184366176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56531241940 is a wasteful number, since it uses less digits than its factorization.

56531241940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826562106 (or 2826562104 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 56531241940 in words is "fifty-six billion, five hundred thirty-one million, two hundred forty-one thousand, nine hundred forty".