2257881 has 4 divisors (see below), whose sum is σ = 3010512. Its totient is φ = 1505252.

The previous prime is 2257877. The next prime is 2257883. The reversal of 2257881 is 1887522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2257881 - 2² = 2257877 is a prime.

It is a super-2 number, since 2×2257881² = 10196053220322, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2257883) 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, 376311 + ... + 376316.

It is an arithmetic number, because the mean of its divisors is an integer number (752628).

2^2257881 is an apocalyptic number.

It is an amenable number.

2257881 is a deficient number, since it is larger than the sum of its proper divisors (752631).

2257881 is an equidigital number, since it uses as much as digits as its factorization.

2257881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752630.

The product of its digits is 8960, while the sum is 33.

The square root of 2257881 is about 1502.6247036436. The cubic root of 2257881 is about 131.1898844881.

The spelling of 2257881 in words is "two million, two hundred fifty-seven thousand, eight hundred eighty-one".