55233732 has 12 divisors (see below), whose sum is σ = 128878736. Its totient is φ = 18411240.

The previous prime is 55233727. The next prime is 55233733. The reversal of 55233732 is 23733255.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 55233732.

It is not an unprimeable number, because it can be changed into a prime (55233733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2301394 + ... + 2301417.

Almost surely, 2^55233732 is an apocalyptic number.

It is an amenable number.

55233732 is an abundant number, since it is smaller than the sum of its proper divisors (73645004).

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

55233732 is a wasteful number, since it uses less digits than its factorization.

55233732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602818 (or 4602816 counting only the distinct ones).

The product of its digits is 18900, while the sum is 30.

The square root of 55233732 is about 7431.9399889935. The cubic root of 55233732 is about 380.8331948707.

Adding to 55233732 its reverse (23733255), we get a palindrome (78966987).

The spelling of 55233732 in words is "fifty-five million, two hundred thirty-three thousand, seven hundred thirty-two".