2251504289 has 8 divisors (see below), whose sum is σ = 2319765480. Its totient is φ = 2184198016.

The previous prime is 2251504273. The next prime is 2251504319. The reversal of 2251504289 is 9824051522.

It can be written as a sum of positive squares in 4 ways, for example, as 25080064 + 2226424225 = 5008^2 + 47185^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2251504289 - 2⁴ = 2251504273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2251504249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233942 + ... + 243375.

It is an arithmetic number, because the mean of its divisors is an integer number (289970685).

Almost surely, 2^2251504289 is an apocalyptic number.

It is an amenable number.

2251504289 is a deficient number, since it is larger than the sum of its proper divisors (68261191).

2251504289 is an equidigital number, since it uses as much as digits as its factorization.

2251504289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477459.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 2251504289 is about 47450.0188514188. The cubic root of 2251504289 is about 1310.6626581559.

The spelling of 2251504289 in words is "two billion, two hundred fifty-one million, five hundred four thousand, two hundred eighty-nine".