15322081 has 2 divisors, whose sum is σ = 15322082. Its totient is φ = 15322080.

The previous prime is 15322031. The next prime is 15322127. The reversal of 15322081 is 18022351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9363600 + 5958481 = 3060^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 15322081 - 2¹⁷ = 15191009 is a prime.

It is a super-2 number, since 2×15322081² = 469532332341122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15322001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7661040 + 7661041.

It is an arithmetic number, because the mean of its divisors is an integer number (7661041).

Almost surely, 2^15322081 is an apocalyptic number.

It is an amenable number.

15322081 is a deficient number, since it is larger than the sum of its proper divisors (1).

15322081 is an equidigital number, since it uses as much as digits as its factorization.

15322081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 15322081 is about 3914.3429844611. The cubic root of 15322081 is about 248.3738778397.

The spelling of 15322081 in words is "fifteen million, three hundred twenty-two thousand, eighty-one".