2258121 has 4 divisors (see below), whose sum is σ = 3010832. Its totient is φ = 1505412.

The previous prime is 2258119. The next prime is 2258129. The reversal of 2258121 is 1218522.

It is a happy number.

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 not a de Polignac number, because 2258121 - 2¹ = 2258119 is a prime.

It is a super-2 number, since 2×2258121² = 10198220901282, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2258129) 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, 376351 + ... + 376356.

It is an arithmetic number, because the mean of its divisors is an integer number (752708).

2^2258121 is an apocalyptic number.

It is an amenable number.

2258121 is a deficient number, since it is larger than the sum of its proper divisors (752711).

2258121 is an equidigital number, since it uses as much as digits as its factorization.

2258121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752710.

The product of its digits is 320, while the sum is 21.

The square root of 2258121 is about 1502.7045617819. The cubic root of 2258121 is about 131.1945325713.

The spelling of 2258121 in words is "two million, two hundred fifty-eight thousand, one hundred twenty-one".