15790961 has 4 divisors (see below), whose sum is σ = 15811572. Its totient is φ = 15770352.

The previous prime is 15790927. The next prime is 15790963. The reversal of 15790961 is 16909751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16909751 = 211 ⋅80141.

It can be written as a sum of positive squares in 2 ways, for example, as 2512225 + 13278736 = 1585^2 + 3644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15790961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15790963) 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, 9110 + ... + 10703.

It is an arithmetic number, because the mean of its divisors is an integer number (3952893).

Almost surely, 2^15790961 is an apocalyptic number.

It is an amenable number.

15790961 is a deficient number, since it is larger than the sum of its proper divisors (20611).

15790961 is an equidigital number, since it uses as much as digits as its factorization.

15790961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20610.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 15790961 is about 3973.7842165875. The cubic root of 15790961 is about 250.8820099079.

The spelling of 15790961 in words is "fifteen million, seven hundred ninety thousand, nine hundred sixty-one".