13550805531 has 6 divisors (see below), whose sum is σ = 19573385780. Its totient is φ = 9033870348.

The previous prime is 13550805469. The next prime is 13550805539.

13550805531 is nontrivially palindromic in base 10.

13550805531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13550805531 - 2⁷ = 13550805403 is a prime.

It is a super-2 number, since 2×13550805531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13550805539) 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 5 ways as a sum of consecutive naturals, for example, 752822521 + ... + 752822538.

Almost surely, 2^13550805531 is an apocalyptic number.

13550805531 is a deficient number, since it is larger than the sum of its proper divisors (6022580249).

13550805531 is a wasteful number, since it uses less digits than its factorization.

13550805531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505645065 (or 1505645062 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 13550805531 in words is "thirteen billion, five hundred fifty million, eight hundred five thousand, five hundred thirty-one".