53015544531 has 12 divisors (see below), whose sum is σ = 81082597752. Its totient is φ = 33264655296.

The previous prime is 53015544499. The next prime is 53015544539. The reversal of 53015544531 is 13544551035.

53015544531 is a `hidden beast` number, since 5 + 30 + 1 + 55 + 44 + 531 = 666.

It is not a de Polignac number, because 53015544531 - 2⁵ = 53015544499 is a prime.

It is a super-2 number, since 2×53015544531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53015544539) 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 11 ways as a sum of consecutive naturals, for example, 173253261 + ... + 173253566.

It is an arithmetic number, because the mean of its divisors is an integer number (6756883146).

Almost surely, 2^53015544531 is an apocalyptic number.

53015544531 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

53015544531 is a deficient number, since it is larger than the sum of its proper divisors (28067053221).

53015544531 is a wasteful number, since it uses less digits than its factorization.

53015544531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346506850 (or 346506847 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 53015544531 in words is "fifty-three billion, fifteen million, five hundred forty-four thousand, five hundred thirty-one".