55143882 has 16 divisors (see below), whose sum is σ = 122542080. Its totient is φ = 18381276.

The previous prime is 55143859. The next prime is 55143883. The reversal of 55143882 is 28834155.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55143883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510538 + ... + 510645.

It is an arithmetic number, because the mean of its divisors is an integer number (7658880).

Almost surely, 2^55143882 is an apocalyptic number.

55143882 is an abundant number, since it is smaller than the sum of its proper divisors (67398198).

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

55143882 is a wasteful number, since it uses less digits than its factorization.

55143882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021194 (or 1021188 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 55143882 is about 7425.8926736117. The cubic root of 55143882 is about 380.6265793814.

The spelling of 55143882 in words is "fifty-five million, one hundred forty-three thousand, eight hundred eighty-two".