55562232 has 144 divisors (see below), whose sum is σ = 164180520. Its totient is φ = 15649920.

The previous prime is 55562189. The next prime is 55562233. The reversal of 55562232 is 23226555.

It is a self number, because there is not a number n which added to its sum of digits gives 55562232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55562233) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1048318 + ... + 1048370.

Almost surely, 2^55562232 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 55562232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82090260).

55562232 is an abundant number, since it is smaller than the sum of its proper divisors (108618288).

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

55562232 is a wasteful number, since it uses less digits than its factorization.

55562232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 88 counting only the distinct ones).

The product of its digits is 18000, while the sum is 30.

The square root of 55562232 is about 7454.0077810531. The cubic root of 55562232 is about 381.5866988143.

Adding to 55562232 its reverse (23226555), we get a palindrome (78788787).

The spelling of 55562232 in words is "fifty-five million, five hundred sixty-two thousand, two hundred thirty-two".