15791851 has 2 divisors, whose sum is σ = 15791852. Its totient is φ = 15791850.

The previous prime is 15791843. The next prime is 15791911. The reversal of 15791851 is 15819751.

It is a weak prime.

It is an emirp because it is prime and its reverse (15819751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15791851 - 2³ = 15791843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15791851.

It is not a weakly prime, because it can be changed into another prime (15791551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7895925 + 7895926.

It is an arithmetic number, because the mean of its divisors is an integer number (7895926).

Almost surely, 2^15791851 is an apocalyptic number.

15791851 is a deficient number, since it is larger than the sum of its proper divisors (1).

15791851 is an equidigital number, since it uses as much as digits as its factorization.

15791851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 37.

The square root of 15791851 is about 3973.8961989463. The cubic root of 15791851 is about 250.8867231696.

The spelling of 15791851 in words is "fifteen million, seven hundred ninety-one thousand, eight hundred fifty-one".