55105232 has 40 divisors (see below), whose sum is σ = 131408256. Its totient is φ = 21799296.

The previous prime is 55105207. The next prime is 55105243. The reversal of 55105232 is 23250155.

It is a junction number, because it is equal to n+sod(n) for n = 55105198 and 55105207.

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, 17468 + ... + 20379.

Almost surely, 2^55105232 is an apocalyptic number.

55105232 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55105232 is an abundant number, since it is smaller than the sum of its proper divisors (76303024).

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

55105232 is a wasteful number, since it uses less digits than its factorization.

55105232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37875 (or 37869 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 55105232 is about 7423.2898367233. The cubic root of 55105232 is about 380.5376323390.

Adding to 55105232 its reverse (23250155), we get a palindrome (78355387).

The spelling of 55105232 in words is "fifty-five million, one hundred five thousand, two hundred thirty-two".