55554221532 has 24 divisors (see below), whose sum is σ = 129778506256. Its totient is φ = 18496361088.

The previous prime is 55554221507. The next prime is 55554221549. The reversal of 55554221532 is 23512245555.

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, 2703433 + ... + 2723904.

Almost surely, 2^55554221532 is an apocalyptic number.

It is an amenable number.

55554221532 is an abundant number, since it is smaller than the sum of its proper divisors (74224284724).

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

55554221532 is a wasteful number, since it uses less digits than its factorization.

55554221532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428197 (or 5428195 counting only the distinct ones).

The product of its digits is 300000, while the sum is 39.

The spelling of 55554221532 in words is "fifty-five billion, five hundred fifty-four million, two hundred twenty-one thousand, five hundred thirty-two".