2251500550 has 96 divisors (see below), whose sum is σ = 4817191680. Its totient is φ = 776563200.

The previous prime is 2251500539. The next prime is 2251500557. The reversal of 2251500550 is 550051522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251500557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 582424 + ... + 586276.

It is an arithmetic number, because the mean of its divisors is an integer number (50179080).

Almost surely, 2^2251500550 is an apocalyptic number.

2251500550 is an abundant number, since it is smaller than the sum of its proper divisors (2565691130).

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

2251500550 is a wasteful number, since it uses less digits than its factorization.

2251500550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938 (or 3933 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 2251500550 is about 47449.9794520503. The cubic root of 2251500550 is about 1310.6619326305.

The spelling of 2251500550 in words is "two billion, two hundred fifty-one million, five hundred thousand, five hundred fifty".