56531511757 has 8 divisors (see below), whose sum is σ = 64608923456. Its totient is φ = 48454470432.

The previous prime is 56531511739. The next prime is 56531511761. The reversal of 56531511757 is 75711513565.

56531511757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56531511757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56531511727) 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, 434638 + ... + 549520.

It is an arithmetic number, because the mean of its divisors is an integer number (8076115432).

Almost surely, 2^56531511757 is an apocalyptic number.

It is an amenable number.

56531511757 is a deficient number, since it is larger than the sum of its proper divisors (8077411699).

56531511757 is a wasteful number, since it uses less digits than its factorization.

56531511757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185187.

The product of its digits is 551250, while the sum is 46.

The spelling of 56531511757 in words is "fifty-six billion, five hundred thirty-one million, five hundred eleven thousand, seven hundred fifty-seven".