2251500100 has 18 divisors (see below), whose sum is σ = 4885755434. Its totient is φ = 900600000.

The previous prime is 2251500089. The next prime is 2251500101. The reversal of 2251500100 is 10051522.

It can be written as a sum of positive squares in 3 ways, for example, as 32901696 + 2218598404 = 5736^2 + 47102^2 .

It is not an unprimeable number, because it can be changed into a prime (2251500101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11257401 + ... + 11257600.

Almost surely, 2^2251500100 is an apocalyptic number.

2251500100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251500100 is an abundant number, since it is smaller than the sum of its proper divisors (2634255334).

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

2251500100 is a wasteful number, since it uses less digits than its factorization.

2251500100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22515015 (or 22515008 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 2251500100 is about 47449.9747102145. The cubic root of 2251500100 is about 1310.6618453113.

Adding to 2251500100 its reverse (10051522), we get a palindrome (2261551622).

The spelling of 2251500100 in words is "two billion, two hundred fifty-one million, five hundred thousand, one hundred".