2251501521 has 8 divisors (see below), whose sum is σ = 3051215424. Its totient is φ = 1476394320.

The previous prime is 2251501513. The next prime is 2251501561. The reversal of 2251501521 is 1251051522.

2251501521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2251501521 - 2³ = 2251501513 is a prime.

It is a super-3 number, since 3×2251501521³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2251501491 and 2251501500.

It is not an unprimeable number, because it can be changed into a prime (2251501561) 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, 6151461 + ... + 6151826.

It is an arithmetic number, because the mean of its divisors is an integer number (381401928).

Almost surely, 2^2251501521 is an apocalyptic number.

It is an amenable number.

2251501521 is a deficient number, since it is larger than the sum of its proper divisors (799713903).

2251501521 is a wasteful number, since it uses less digits than its factorization.

2251501521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12303351.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 2251501521 is about 47449.9896838766. The cubic root of 2251501521 is about 1310.6621210460.

The spelling of 2251501521 in words is "two billion, two hundred fifty-one million, five hundred one thousand, five hundred twenty-one".