15916157 has 4 divisors (see below), whose sum is σ = 16465020. Its totient is φ = 15367296.

The previous prime is 15916151. The next prime is 15916169. The reversal of 15916157 is 75161951.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5541316 + 10374841 = 2354^2 + 3221^2 .

It is a cyclic number.

It is not a de Polignac number, because 15916157 - 2⁶ = 15916093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15916151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274388 + ... + 274445.

It is an arithmetic number, because the mean of its divisors is an integer number (4116255).

Almost surely, 2^15916157 is an apocalyptic number.

It is an amenable number.

15916157 is a deficient number, since it is larger than the sum of its proper divisors (548863).

15916157 is an equidigital number, since it uses as much as digits as its factorization.

15916157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548862.

The product of its digits is 9450, while the sum is 35.

The square root of 15916157 is about 3989.5058591259. The cubic root of 15916157 is about 251.5432907442.

The spelling of 15916157 in words is "fifteen million, nine hundred sixteen thousand, one hundred fifty-seven".