15122161 has 2 divisors, whose sum is σ = 15122162. Its totient is φ = 15122160.

The previous prime is 15122143. The next prime is 15122179. The reversal of 15122161 is 16122151.

It is a balanced prime because it is at equal distance from previous prime (15122143) and next prime (15122179).

It can be written as a sum of positive squares in only one way, i.e., 9090225 + 6031936 = 3015^2 + 2456^2 .

It is an emirp because it is prime and its reverse (16122151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15122161 - 2⁷ = 15122033 is a prime.

It is not a weakly prime, because it can be changed into another prime (15122131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561080 + 7561081.

It is an arithmetic number, because the mean of its divisors is an integer number (7561081).

Almost surely, 2^15122161 is an apocalyptic number.

It is an amenable number.

15122161 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122161 is an equidigital number, since it uses as much as digits as its factorization.

15122161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 19.

The square root of 15122161 is about 3888.7222837328. The cubic root of 15122161 is about 247.2888979796.

The spelling of 15122161 in words is "fifteen million, one hundred twenty-two thousand, one hundred sixty-one".