55263900 has 72 divisors (see below), whose sum is σ = 163833264. Its totient is φ = 14374400.

The previous prime is 55263899. The next prime is 55263911. The reversal of 55263900 is 936255.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10054 + ... + 14546.

It is an arithmetic number, because the mean of its divisors is an integer number (2275462).

Almost surely, 2^55263900 is an apocalyptic number.

55263900 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 55263900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81916632).

55263900 is an abundant number, since it is smaller than the sum of its proper divisors (108569364).

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

55263900 is a wasteful number, since it uses less digits than its factorization.

55263900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551 (or 4544 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 55263900 is about 7433.9693300417. The cubic root of 55263900 is about 380.9025177544.

The spelling of 55263900 in words is "fifty-five million, two hundred sixty-three thousand, nine hundred".