15420169 has 2 divisors, whose sum is σ = 15420170. Its totient is φ = 15420168.

The previous prime is 15420161. The next prime is 15420179. The reversal of 15420169 is 96102451.

15420169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14348944 + 1071225 = 3788^2 + 1035^2 .

It is a cyclic number.

It is not a de Polignac number, because 15420169 - 2³ = 15420161 is a prime.

It is a super-2 number, since 2×15420169² = 475563223977122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15420161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7710084 + 7710085.

It is an arithmetic number, because the mean of its divisors is an integer number (7710085).

Almost surely, 2^15420169 is an apocalyptic number.

It is an amenable number.

15420169 is a deficient number, since it is larger than the sum of its proper divisors (1).

15420169 is an equidigital number, since it uses as much as digits as its factorization.

15420169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 15420169 is about 3926.8523017807. The cubic root of 15420169 is about 248.9027592967.

The spelling of 15420169 in words is "fifteen million, four hundred twenty thousand, one hundred sixty-nine".