55479146531 has 4 divisors (see below), whose sum is σ = 56659553952. Its totient is φ = 54298739112.

The previous prime is 55479146509. The next prime is 55479146623. The reversal of 55479146531 is 13564197455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13564197455 = 5 ⋅2712839491.

It is a cyclic number.

It is not a de Polignac number, because 55479146531 - 2²² = 55474952227 is a prime.

It is a super-2 number, since 2×55479146531² (a number of 22 digits) contains 22 as substring.

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 55479146531.

It is not an unprimeable number, because it can be changed into a prime (55479146231) 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, 590203640 + ... + 590203733.

It is an arithmetic number, because the mean of its divisors is an integer number (14164888488).

Almost surely, 2^55479146531 is an apocalyptic number.

55479146531 is a deficient number, since it is larger than the sum of its proper divisors (1180407421).

55479146531 is a wasteful number, since it uses less digits than its factorization.

55479146531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180407420.

The product of its digits is 2268000, while the sum is 50.

The spelling of 55479146531 in words is "fifty-five billion, four hundred seventy-nine million, one hundred forty-six thousand, five hundred thirty-one".