12252291 has 32 divisors (see below), whose sum is σ = 18298368. Its totient is φ = 7257600.

The previous prime is 12252271. The next prime is 12252301. The reversal of 12252291 is 19225221.

It is not a de Polignac number, because 12252291 - 2⁵ = 12252259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12252271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81066 + ... + 81216.

It is an arithmetic number, because the mean of its divisors is an integer number (571824).

Almost surely, 2^12252291 is an apocalyptic number.

12252291 is a deficient number, since it is larger than the sum of its proper divisors (6046077).

12252291 is a wasteful number, since it uses less digits than its factorization.

12252291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251.

The product of its digits is 720, while the sum is 24.

The square root of 12252291 is about 3500.3272704134. The cubic root of 12252291 is about 230.5361844684.

The spelling of 12252291 in words is "twelve million, two hundred fifty-two thousand, two hundred ninety-one".