55100232 has 96 divisors (see below), whose sum is σ = 168480000. Its totient is φ = 16114560.

The previous prime is 55100219. The next prime is 55100233. The reversal of 55100232 is 23200155.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (55100233) 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, 21769 + ... + 24167.

It is an arithmetic number, because the mean of its divisors is an integer number (1755000).

Almost surely, 2^55100232 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 55100232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84240000).

55100232 is an abundant number, since it is smaller than the sum of its proper divisors (113379768).

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

55100232 is a wasteful number, since it uses less digits than its factorization.

55100232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451 (or 2444 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 55100232 is about 7422.9530511785. The cubic root of 55100232 is about 380.5261225686.

Adding to 55100232 its reverse (23200155), we get a palindrome (78300387).

The spelling of 55100232 in words is "fifty-five million, one hundred thousand, two hundred thirty-two".