55405023132 has 24 divisors (see below), whose sum is σ = 129301757200. Its totient is φ = 18465002496.

The previous prime is 55405023083. The next prime is 55405023197. The reversal of 55405023132 is 23132050455.

It is a self number, because there is not a number n which added to its sum of digits gives 55405023132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347707 + ... + 481362.

Almost surely, 2^55405023132 is an apocalyptic number.

It is an amenable number.

55405023132 is an abundant number, since it is smaller than the sum of its proper divisors (73896734068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55405023132 is a wasteful number, since it uses less digits than its factorization.

55405023132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834645 (or 834643 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 55405023132 its reverse (23132050455), we get a palindrome (78537073587).

The spelling of 55405023132 in words is "fifty-five billion, four hundred five million, twenty-three thousand, one hundred thirty-two".