55142332 has 24 divisors (see below), whose sum is σ = 116090240. Its totient is φ = 22388400.

The previous prime is 55142317. The next prime is 55142341. The reversal of 55142332 is 23324155.

It is a junction number, because it is equal to n+sod(n) for n = 55142297 and 55142306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51294 + ... + 52357.

Almost surely, 2^55142332 is an apocalyptic number.

It is an amenable number.

55142332 is an abundant number, since it is smaller than the sum of its proper divisors (60947908).

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

55142332 is a wasteful number, since it uses less digits than its factorization.

55142332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103681 (or 103679 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 55142332 is about 7425.7883083212. The cubic root of 55142332 is about 380.6230130945.

Adding to 55142332 its reverse (23324155), we get a palindrome (78466487).

The spelling of 55142332 in words is "fifty-five million, one hundred forty-two thousand, three hundred thirty-two".