55455132 has 12 divisors (see below), whose sum is σ = 129395336. Its totient is φ = 18485040.

The previous prime is 55455121. The next prime is 55455137. The reversal of 55455132 is 23155455.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 55455132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55455137) 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, 2310619 + ... + 2310642.

Almost surely, 2^55455132 is an apocalyptic number.

It is an amenable number.

55455132 is an abundant number, since it is smaller than the sum of its proper divisors (73940204).

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

55455132 is a wasteful number, since it uses less digits than its factorization.

55455132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4621268 (or 4621266 counting only the distinct ones).

The product of its digits is 15000, while the sum is 30.

The square root of 55455132 is about 7446.8202610242. The cubic root of 55455132 is about 381.3413629647.

The spelling of 55455132 in words is "fifty-five million, four hundred fifty-five thousand, one hundred thirty-two".