53775637931 has 4 divisors (see below), whose sum is σ = 53776947672. Its totient is φ = 53774328192.

The previous prime is 53775637871. The next prime is 53775637963. The reversal of 53775637931 is 13973657735.

53775637931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53775637931 is a prime.

It is a super-2 number, since 2×53775637931² (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 (53775637031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591221 + ... + 676086.

It is an arithmetic number, because the mean of its divisors is an integer number (13444236918).

Almost surely, 2^53775637931 is an apocalyptic number.

53775637931 is a deficient number, since it is larger than the sum of its proper divisors (1309741).

53775637931 is a wasteful number, since it uses less digits than its factorization.

53775637931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309740.

The product of its digits is 12502350, while the sum is 56.

The spelling of 53775637931 in words is "fifty-three billion, seven hundred seventy-five million, six hundred thirty-seven thousand, nine hundred thirty-one".