55001232 has 120 divisors (see below), whose sum is σ = 180905088. Its totient is φ = 15379200.

The previous prime is 55001207. The next prime is 55001237. The reversal of 55001232 is 23210055.

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 (55001237) 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, 19257 + ... + 21927.

Almost surely, 2^55001232 is an apocalyptic number.

55001232 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55001232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90452544).

55001232 is an abundant number, since it is smaller than the sum of its proper divisors (125903856).

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

55001232 is a wasteful number, since it uses less digits than its factorization.

55001232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2709 (or 2700 counting only the distinct ones).

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

The square root of 55001232 is about 7416.2815480536. The cubic root of 55001232 is about 380.2980855928.

Adding to 55001232 its reverse (23210055), we get a palindrome (78211287).

The spelling of 55001232 in words is "fifty-five million, one thousand, two hundred thirty-two".