2572901521 has 4 divisors (see below), whose sum is σ = 2573027044. Its totient is φ = 2572776000.

The previous prime is 2572901519. The next prime is 2572901531. The reversal of 2572901521 is 1251092752.

2572901521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1176833025 + 1396068496 = 34305^2 + 37364^2 .

It is a cyclic number.

It is not a de Polignac number, because 2572901521 - 2¹ = 2572901519 is a prime.

It is a super-2 number, since 2×2572901521² = 13239644473528226882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2572901501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24060 + ... + 75661.

It is an arithmetic number, because the mean of its divisors is an integer number (643256761).

Almost surely, 2^2572901521 is an apocalyptic number.

It is an amenable number.

2572901521 is a deficient number, since it is larger than the sum of its proper divisors (125523).

2572901521 is an equidigital number, since it uses as much as digits as its factorization.

2572901521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125522.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 2572901521 is about 50723.7766831296. The cubic root of 2572901521 is about 1370.2749587536.

The spelling of 2572901521 in words is "two billion, five hundred seventy-two million, nine hundred one thousand, five hundred twenty-one".