55128932 has 24 divisors (see below), whose sum is σ = 99743616. Its totient is φ = 26645408.

The previous prime is 55128923. The next prime is 55128949. The reversal of 55128932 is 23982155.

It is a junction number, because it is equal to n+sod(n) for n = 55128892 and 55128901.

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, 13838 + ... + 17370.

It is an arithmetic number, because the mean of its divisors is an integer number (4155984).

Almost surely, 2^55128932 is an apocalyptic number.

It is an amenable number.

55128932 is a deficient number, since it is larger than the sum of its proper divisors (44614684).

55128932 is a wasteful number, since it uses less digits than its factorization.

55128932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3667 (or 3665 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 55128932 is about 7424.8859923907. The cubic root of 55128932 is about 380.5921791816.

The spelling of 55128932 in words is "fifty-five million, one hundred twenty-eight thousand, nine hundred thirty-two".