55553432 has 64 divisors (see below), whose sum is σ = 117849600. Its totient is φ = 24336000.

The previous prime is 55553429. The next prime is 55553447. The reversal of 55553432 is 23435555.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424007 + ... + 424137.

It is an arithmetic number, because the mean of its divisors is an integer number (1841400).

Almost surely, 2^55553432 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 55553432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58924800).

55553432 is an abundant number, since it is smaller than the sum of its proper divisors (62296168).

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

55553432 is a wasteful number, since it uses less digits than its factorization.

55553432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 284 counting only the distinct ones).

The product of its digits is 45000, while the sum is 32.

The square root of 55553432 is about 7453.4174712007. The cubic root of 55553432 is about 381.5665523939.

Adding to 55553432 its reverse (23435555), we get a palindrome (78988987).

The spelling of 55553432 in words is "fifty-five million, five hundred fifty-three thousand, four hundred thirty-two".