2528332581 has 16 divisors (see below), whose sum is σ = 3463841664. Its totient is φ = 1639232064.

The previous prime is 2528332537. The next prime is 2528332601. The reversal of 2528332581 is 1852338252.

2528332581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2528332581 - 2⁶ = 2528332517 is a prime.

It is a super-2 number, since 2×2528332581² = 12784931280292243122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528332501) 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, 324376 + ... + 332078.

It is an arithmetic number, because the mean of its divisors is an integer number (216490104).

Almost surely, 2^2528332581 is an apocalyptic number.

It is an amenable number.

2528332581 is a deficient number, since it is larger than the sum of its proper divisors (935509083).

2528332581 is a wasteful number, since it uses less digits than its factorization.

2528332581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700.

The product of its digits is 115200, while the sum is 39.

The square root of 2528332581 is about 50282.5275915998. The cubic root of 2528332581 is about 1362.3166579438.

The spelling of 2528332581 in words is "two billion, five hundred twenty-eight million, three hundred thirty-two thousand, five hundred eighty-one".