2257528331 has 2 divisors, whose sum is σ = 2257528332. Its totient is φ = 2257528330.

The previous prime is 2257528313. The next prime is 2257528391. The reversal of 2257528331 is 1338257522.

Together with previous prime (2257528313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2257528331 - 2⁶ = 2257528267 is a prime.

It is a super-2 number, since 2×2257528331² = 10192868330535291122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2257528391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128764165 + 1128764166.

It is an arithmetic number, because the mean of its divisors is an integer number (1128764166).

Almost surely, 2^2257528331 is an apocalyptic number.

2257528331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2257528331 is an equidigital number, since it uses as much as digits as its factorization.

2257528331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 38.

The square root of 2257528331 is about 47513.4542103602. The cubic root of 2257528331 is about 1311.8305374507.

The spelling of 2257528331 in words is "two billion, two hundred fifty-seven million, five hundred twenty-eight thousand, three hundred thirty-one".