2251455521 has 8 divisors (see below), whose sum is σ = 2708518080. Its totient is φ = 1828249488.

The previous prime is 2251455461. The next prime is 2251455541. The reversal of 2251455521 is 1255541522.

It is a happy number.

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 2251455521 - 2¹⁰ = 2251454497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2251455541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8463986 + ... + 8464251.

It is an arithmetic number, because the mean of its divisors is an integer number (338564760).

Almost surely, 2^2251455521 is an apocalyptic number.

It is an amenable number.

2251455521 is a deficient number, since it is larger than the sum of its proper divisors (457062559).

2251455521 is a wasteful number, since it uses less digits than its factorization.

2251455521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16928263.

The product of its digits is 20000, while the sum is 32.

The square root of 2251455521 is about 47449.5049605367. The cubic root of 2251455521 is about 1310.6531950222.

The spelling of 2251455521 in words is "two billion, two hundred fifty-one million, four hundred fifty-five thousand, five hundred twenty-one".