55143528 has 32 divisors (see below), whose sum is σ = 150392160. Its totient is φ = 16710080.

The previous prime is 55143511. The next prime is 55143547. The reversal of 55143528 is 82534155.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 104175 + ... + 104702.

It is an arithmetic number, because the mean of its divisors is an integer number (4699755).

Almost surely, 2^55143528 is an apocalyptic number.

It is an amenable number.

55143528 is an abundant number, since it is smaller than the sum of its proper divisors (95248632).

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

55143528 is a wasteful number, since it uses less digits than its factorization.

55143528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208897 (or 208893 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 55143528 is about 7425.8688380552. The cubic root of 55143528 is about 380.6257648934.

The spelling of 55143528 in words is "fifty-five million, one hundred forty-three thousand, five hundred twenty-eight".