15122189 has 2 divisors, whose sum is σ = 15122190. Its totient is φ = 15122188.

The previous prime is 15122179. The next prime is 15122207. The reversal of 15122189 is 98122151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10465225 + 4656964 = 3235^2 + 2158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15122189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15122179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561094 + 7561095.

It is an arithmetic number, because the mean of its divisors is an integer number (7561095).

Almost surely, 2^15122189 is an apocalyptic number.

It is an amenable number.

15122189 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122189 is an equidigital number, since it uses as much as digits as its factorization.

15122189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 29.

The square root of 15122189 is about 3888.7258838854. The cubic root of 15122189 is about 247.2890506052.

The spelling of 15122189 in words is "fifteen million, one hundred twenty-two thousand, one hundred eighty-nine".