15163997 has 2 divisors, whose sum is σ = 15163998. Its totient is φ = 15163996.

The previous prime is 15163979. The next prime is 15164011. The reversal of 15163997 is 79936151.

Together with previous prime (15163979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15100996 + 63001 = 3886^2 + 251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15163997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15163097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7581998 + 7581999.

It is an arithmetic number, because the mean of its divisors is an integer number (7581999).

Almost surely, 2^15163997 is an apocalyptic number.

It is an amenable number.

15163997 is a deficient number, since it is larger than the sum of its proper divisors (1).

15163997 is an equidigital number, since it uses as much as digits as its factorization.

15163997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51030, while the sum is 41.

The square root of 15163997 is about 3894.0977132065. The cubic root of 15163997 is about 247.5167325354.

The spelling of 15163997 in words is "fifteen million, one hundred sixty-three thousand, nine hundred ninety-seven".