54312555531 has 16 divisors (see below), whose sum is σ = 78020201504. Its totient is φ = 33408993024.

The previous prime is 54312555529. The next prime is 54312555569. The reversal of 54312555531 is 13555521345.

It is not a de Polignac number, because 54312555531 - 2¹ = 54312555529 is a prime.

It is a super-2 number, since 2×54312555531² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54312555531.

It is not an unprimeable number, because it can be changed into a prime (54312555131) 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 15 ways as a sum of consecutive naturals, for example, 200236 + ... + 385641.

It is an arithmetic number, because the mean of its divisors is an integer number (4876262594).

Almost surely, 2^54312555531 is an apocalyptic number.

54312555531 is a deficient number, since it is larger than the sum of its proper divisors (23707645973).

54312555531 is a wasteful number, since it uses less digits than its factorization.

54312555531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588270.

The product of its digits is 225000, while the sum is 39.

The spelling of 54312555531 in words is "fifty-four billion, three hundred twelve million, five hundred fifty-five thousand, five hundred thirty-one".