15715873 has 2 divisors, whose sum is σ = 15715874. Its totient is φ = 15715872.

The previous prime is 15715859. The next prime is 15715879. The reversal of 15715873 is 37851751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14837904 + 877969 = 3852^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 15715873 - 2⁵ = 15715841 is a prime.

It is not a weakly prime, because it can be changed into another prime (15715879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7857936 + 7857937.

It is an arithmetic number, because the mean of its divisors is an integer number (7857937).

Almost surely, 2^15715873 is an apocalyptic number.

It is an amenable number.

15715873 is a deficient number, since it is larger than the sum of its proper divisors (1).

15715873 is an equidigital number, since it uses as much as digits as its factorization.

15715873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 37.

The square root of 15715873 is about 3964.3250371280. The cubic root of 15715873 is about 250.4837194583.

The spelling of 15715873 in words is "fifteen million, seven hundred fifteen thousand, eight hundred seventy-three".