15397073 has 2 divisors, whose sum is σ = 15397074. Its totient is φ = 15397072.

The previous prime is 15397037. The next prime is 15397079. The reversal of 15397073 is 37079351.

Together with previous prime (15397037) 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., 15272464 + 124609 = 3908^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 15397073 - 2¹² = 15392977 is a prime.

It is not a weakly prime, because it can be changed into another prime (15397079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7698536 + 7698537.

It is an arithmetic number, because the mean of its divisors is an integer number (7698537).

Almost surely, 2^15397073 is an apocalyptic number.

It is an amenable number.

15397073 is a deficient number, since it is larger than the sum of its proper divisors (1).

15397073 is an equidigital number, since it uses as much as digits as its factorization.

15397073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 15397073 is about 3923.9104220153. The cubic root of 15397073 is about 248.7784301234.

The spelling of 15397073 in words is "fifteen million, three hundred ninety-seven thousand, seventy-three".