55038900 has 72 divisors (see below), whose sum is σ = 182002240. Its totient is φ = 12579840.

The previous prime is 55038899. The next prime is 55038901. The reversal of 55038900 is 983055.

It is an interprime number because it is at equal distance from previous prime (55038899) and next prime (55038901).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55038901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11005 + ... + 15204.

Almost surely, 2^55038900 is an apocalyptic number.

55038900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55038900 is an abundant number, since it is smaller than the sum of its proper divisors (126963340).

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

55038900 is a wasteful number, since it uses less digits than its factorization.

55038900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26233 (or 26226 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 55038900 is about 7418.8206609946. The cubic root of 55038900 is about 380.3848824323.

The spelling of 55038900 in words is "fifty-five million, thirty-eight thousand, nine hundred".