55413132 has 72 divisors (see below), whose sum is σ = 141090768. Its totient is φ = 16865280.

The previous prime is 55413121. The next prime is 55413133. The reversal of 55413132 is 23131455.

It is not an unprimeable number, because it can be changed into a prime (55413133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 759048 + ... + 759120.

It is an arithmetic number, because the mean of its divisors is an integer number (1959594).

Almost surely, 2^55413132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55413132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70545384).

55413132 is an abundant number, since it is smaller than the sum of its proper divisors (85677636).

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

55413132 is a wasteful number, since it uses less digits than its factorization.

55413132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 156 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 55413132 is about 7443.9997313272. Note that the first 3 decimals coincide. The cubic root of 55413132 is about 381.2450666028.

Adding to 55413132 its reverse (23131455), we get a palindrome (78544587).

The spelling of 55413132 in words is "fifty-five million, four hundred thirteen thousand, one hundred thirty-two".