45555555531 has 4 divisors (see below), whose sum is σ = 60740740712. Its totient is φ = 30370370352.

The previous prime is 45555555527. The next prime is 45555555587. The reversal of 45555555531 is 13555555554.

It is a happy number.

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

It is not a de Polignac number, because 45555555531 - 2² = 45555555527 is a prime.

It is a super-2 number, since 2×45555555531² (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 (45555555431) 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 3 ways as a sum of consecutive naturals, for example, 7592592586 + ... + 7592592591.

It is an arithmetic number, because the mean of its divisors is an integer number (15185185178).

Almost surely, 2^45555555531 is an apocalyptic number.

45555555531 is a deficient number, since it is larger than the sum of its proper divisors (15185185181).

45555555531 is a wasteful number, since it uses less digits than its factorization.

45555555531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15185185180.

The product of its digits is 4687500, while the sum is 48.

It can be divided in two parts, 4555555553 and 1, that added together give a palindrome (4555555554).

The spelling of 45555555531 in words is "forty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred thirty-one".