2258981 has 2 divisors, whose sum is σ = 2258982. Its totient is φ = 2258980.

The previous prime is 2258969. The next prime is 2258987. The reversal of 2258981 is 1898522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1276900 + 982081 = 1130^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 2258981 - 2⁶ = 2258917 is a prime.

It is a super-2 number, since 2×2258981² = 10205990316722, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2258987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129490 + 1129491.

It is an arithmetic number, because the mean of its divisors is an integer number (1129491).

2^2258981 is an apocalyptic number.

It is an amenable number.

2258981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2258981 is an equidigital number, since it uses as much as digits as its factorization.

2258981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 35.

The square root of 2258981 is about 1502.9906852672. The cubic root of 2258981 is about 131.2111854991.

The spelling of 2258981 in words is "two million, two hundred fifty-eight thousand, nine hundred eighty-one".