55039500 has 168 divisors, whose sum is σ = 181420512. Its totient is φ = 14580000.

The previous prime is 55039499. The next prime is 55039513. The reversal of 55039500 is 593055.

55039500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 364425 + ... + 364575.

It is an arithmetic number, because the mean of its divisors is an integer number (1079884).

Almost surely, 2^55039500 is an apocalyptic number.

55039500 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 55039500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90710256).

55039500 is an abundant number, since it is smaller than the sum of its proper divisors (126381012).

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

55039500 is a wasteful number, since it uses less digits than its factorization.

55039500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 27.

The square root of 55039500 is about 7418.8610985784. The cubic root of 55039500 is about 380.3862646674.

The spelling of 55039500 in words is "fifty-five million, thirty-nine thousand, five hundred".