15791137 has 2 divisors, whose sum is σ = 15791138. Its totient is φ = 15791136.

The previous prime is 15791129. The next prime is 15791143. The reversal of 15791137 is 73119751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15713296 + 77841 = 3964^2 + 279^2 .

It is an emirp because it is prime and its reverse (73119751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15791137 - 2³ = 15791129 is a prime.

It is not a weakly prime, because it can be changed into another prime (15791197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7895568 + 7895569.

It is an arithmetic number, because the mean of its divisors is an integer number (7895569).

Almost surely, 2^15791137 is an apocalyptic number.

It is an amenable number.

15791137 is a deficient number, since it is larger than the sum of its proper divisors (1).

15791137 is an equidigital number, since it uses as much as digits as its factorization.

15791137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6615, while the sum is 34.

The square root of 15791137 is about 3973.8063616638. The cubic root of 15791137 is about 250.8829419827.

The spelling of 15791137 in words is "fifteen million, seven hundred ninety-one thousand, one hundred thirty-seven".