55144632 has 16 divisors (see below), whose sum is σ = 137861640. Its totient is φ = 18381536.

The previous prime is 55144627. The next prime is 55144633. The reversal of 55144632 is 23644155.

It is a self number, because there is not a number n which added to its sum of digits gives 55144632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55144633) 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, 1148823 + ... + 1148870.

Almost surely, 2^55144632 is an apocalyptic number.

It is an amenable number.

55144632 is an abundant number, since it is smaller than the sum of its proper divisors (82717008).

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

55144632 is a wasteful number, since it uses less digits than its factorization.

55144632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297702 (or 2297698 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 55144632 is about 7425.9431724192. The cubic root of 55144632 is about 380.6283049802.

Adding to 55144632 its reverse (23644155), we get a palindrome (78788787).

The spelling of 55144632 in words is "fifty-five million, one hundred forty-four thousand, six hundred thirty-two".