2251105500 has 96 divisors (see below), whose sum is σ = 7491714048. Its totient is φ = 514536000.

The previous prime is 2251105489. The next prime is 2251105511. The reversal of 2251105500 is 55011522.

It is an interprime number because it is at equal distance from previous prime (2251105489) and next prime (2251105511).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96696 + ... + 117695.

It is an arithmetic number, because the mean of its divisors is an integer number (78038688).

Almost surely, 2^2251105500 is an apocalyptic number.

2251105500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251105500 is an abundant number, since it is smaller than the sum of its proper divisors (5240608548).

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

2251105500 is a wasteful number, since it uses less digits than its factorization.

2251105500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214420 (or 214408 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 2251105500 is about 47445.8164646789. The cubic root of 2251105500 is about 1310.5852715666.

The spelling of 2251105500 in words is "two billion, two hundred fifty-one million, one hundred five thousand, five hundred".