2251500549 has 16 divisors (see below), whose sum is σ = 3069591552. Its totient is φ = 1467282608.

The previous prime is 2251500539. The next prime is 2251500557. The reversal of 2251500549 is 9450051522.

It is a cyclic number.

It is not a de Polignac number, because 2251500549 - 2⁷ = 2251500421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251500539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112432 + ... + 130934.

It is an arithmetic number, because the mean of its divisors is an integer number (191849472).

Almost surely, 2^2251500549 is an apocalyptic number.

It is an amenable number.

2251500549 is a deficient number, since it is larger than the sum of its proper divisors (818091003).

2251500549 is a wasteful number, since it uses less digits than its factorization.

2251500549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19416.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 2251500549 is about 47449.9794415129. The cubic root of 2251500549 is about 1310.6619324365.

The spelling of 2251500549 in words is "two billion, two hundred fifty-one million, five hundred thousand, five hundred forty-nine".