15322961 has 2 divisors, whose sum is σ = 15322962. Its totient is φ = 15322960.

The previous prime is 15322907. The next prime is 15322963. The reversal of 15322961 is 16922351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11262736 + 4060225 = 3356^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 15322961 - 2¹⁰ = 15321937 is a prime.

Together with 15322963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15322963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7661480 + 7661481.

It is an arithmetic number, because the mean of its divisors is an integer number (7661481).

Almost surely, 2^15322961 is an apocalyptic number.

It is an amenable number.

15322961 is a deficient number, since it is larger than the sum of its proper divisors (1).

15322961 is an equidigital number, since it uses as much as digits as its factorization.

15322961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 15322961 is about 3914.4553899617. The cubic root of 15322961 is about 248.3786327384.

The spelling of 15322961 in words is "fifteen million, three hundred twenty-two thousand, nine hundred sixty-one".