55539500 has 48 divisors (see below), whose sum is σ = 122496192. Its totient is φ = 21996800.

The previous prime is 55539481. The next prime is 55539509. The reversal of 55539500 is 593555.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55539509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56009 + ... + 56991.

It is an arithmetic number, because the mean of its divisors is an integer number (2552004).

Almost surely, 2^55539500 is an apocalyptic number.

55539500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55539500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61248096).

55539500 is an abundant number, since it is smaller than the sum of its proper divisors (66956692).

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

55539500 is a wasteful number, since it uses less digits than its factorization.

55539500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 16875, while the sum is 32.

The square root of 55539500 is about 7452.4828077628. The cubic root of 55539500 is about 381.5346525966.

The spelling of 55539500 in words is "fifty-five million, five hundred thirty-nine thousand, five hundred".