55405131224 has 16 divisors (see below), whose sum is σ = 106418392920. Its totient is φ = 27026893120.

The previous prime is 55405131209. The next prime is 55405131247. The reversal of 55405131224 is 42213150455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84458714 + ... + 84459369.

Almost surely, 2^55405131224 is an apocalyptic number.

It is an amenable number.

55405131224 is a deficient number, since it is larger than the sum of its proper divisors (51013261696).

55405131224 is a wasteful number, since it uses less digits than its factorization.

55405131224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168918130 (or 168918126 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 55405131224 its reverse (42213150455), we get a palindrome (97618281679).

The spelling of 55405131224 in words is "fifty-five billion, four hundred five million, one hundred thirty-one thousand, two hundred twenty-four".