55443132 has 18 divisors (see below), whose sum is σ = 140148008. Its totient is φ = 18481032.

The previous prime is 55443109. The next prime is 55443151. The reversal of 55443132 is 23134455.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 55443096 and 55443105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 770008 + ... + 770079.

Almost surely, 2^55443132 is an apocalyptic number.

It is an amenable number.

55443132 is an abundant number, since it is smaller than the sum of its proper divisors (84704876).

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

55443132 is a wasteful number, since it uses less digits than its factorization.

55443132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540097 (or 1540092 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 55443132 is about 7446.0145044178. The cubic root of 55443132 is about 381.3138546812.

Adding to 55443132 its reverse (23134455), we get a palindrome (78577587).

The spelling of 55443132 in words is "fifty-five million, four hundred forty-three thousand, one hundred thirty-two".