22757149 has 2 divisors, whose sum is σ = 22757150. Its totient is φ = 22757148.

The previous prime is 22757123. The next prime is 22757159. The reversal of 22757149 is 94175722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22184100 + 573049 = 4710^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 22757149 - 2²¹ = 20659997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22757159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11378574 + 11378575.

It is an arithmetic number, because the mean of its divisors is an integer number (11378575).

Almost surely, 2^22757149 is an apocalyptic number.

It is an amenable number.

22757149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22757149 is an equidigital number, since it uses as much as digits as its factorization.

22757149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 37.

The square root of 22757149 is about 4770.4453670491. The cubic root of 22757149 is about 283.3822326982.

The spelling of 22757149 in words is "twenty-two million, seven hundred fifty-seven thousand, one hundred forty-nine".