55432513531 has 4 divisors (see below), whose sum is σ = 55432993000. Its totient is φ = 55432034064.

The previous prime is 55432513523. The next prime is 55432513571. The reversal of 55432513531 is 13531523455.

55432513531 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55432513531 - 2³ = 55432513523 is a prime.

It is a super-2 number, since 2×55432513531² (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 (55432513511) 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, 52120 + ... + 337018.

It is an arithmetic number, because the mean of its divisors is an integer number (13858248250).

Almost surely, 2^55432513531 is an apocalyptic number.

55432513531 is a deficient number, since it is larger than the sum of its proper divisors (479469).

55432513531 is a wasteful number, since it uses less digits than its factorization.

55432513531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479468.

The product of its digits is 135000, while the sum is 37.

The spelling of 55432513531 in words is "fifty-five billion, four hundred thirty-two million, five hundred thirteen thousand, five hundred thirty-one".