55144332 has 36 divisors (see below), whose sum is σ = 140038080. Its totient is φ = 18296352.

The previous prime is 55144307. The next prime is 55144337. The reversal of 55144332 is 23344155.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 55144296 and 55144305.

It is not an unprimeable number, because it can be changed into a prime (55144337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4594 + ... + 11462.

Almost surely, 2^55144332 is an apocalyptic number.

It is an amenable number.

55144332 is an abundant number, since it is smaller than the sum of its proper divisors (84893748).

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

55144332 is a wasteful number, since it uses less digits than its factorization.

55144332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7102 (or 7097 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 55144332 is about 7425.9229729374. The cubic root of 55144332 is about 380.6276147426.

Adding to 55144332 its reverse (23344155), we get a palindrome (78488487).

The spelling of 55144332 in words is "fifty-five million, one hundred forty-four thousand, three hundred thirty-two".