15722897 has 2 divisors, whose sum is σ = 15722898. Its totient is φ = 15722896.

The previous prime is 15722887. The next prime is 15722951. The reversal of 15722897 is 79822751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14432401 + 1290496 = 3799^2 + 1136^2 .

It is an emirp because it is prime and its reverse (79822751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15722897 - 2⁴ = 15722881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15722887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7861448 + 7861449.

It is an arithmetic number, because the mean of its divisors is an integer number (7861449).

Almost surely, 2^15722897 is an apocalyptic number.

It is an amenable number.

15722897 is a deficient number, since it is larger than the sum of its proper divisors (1).

15722897 is an equidigital number, since it uses as much as digits as its factorization.

15722897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 41.

The square root of 15722897 is about 3965.2108392871. The cubic root of 15722897 is about 250.5210306870.

The spelling of 15722897 in words is "fifteen million, seven hundred twenty-two thousand, eight hundred ninety-seven".