55239000 has 64 divisors (see below), whose sum is σ = 172355040. Its totient is φ = 14729600.

The previous prime is 55238987. The next prime is 55239043. The reversal of 55239000 is 93255.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6207 + ... + 12206.

Almost surely, 2^55239000 is an apocalyptic number.

55239000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55239000 is an abundant number, since it is smaller than the sum of its proper divisors (117116040).

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

55239000 is a wasteful number, since it uses less digits than its factorization.

55239000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18437 (or 18423 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 55239000 is about 7432.2943967526. The cubic root of 55239000 is about 380.8453019981.

The spelling of 55239000 in words is "fifty-five million, two hundred thirty-nine thousand".