15160121 has 4 divisors (see below), whose sum is σ = 15569892. Its totient is φ = 14750352.

The previous prime is 15160111. The next prime is 15160153. The reversal of 15160121 is 12106151.

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 5456896 + 9703225 = 2336^2 + 3115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15160121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15160121.

It is not an unprimeable number, because it can be changed into a prime (15160111) 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, 204830 + ... + 204903.

It is an arithmetic number, because the mean of its divisors is an integer number (3892473).

Almost surely, 2^15160121 is an apocalyptic number.

It is an amenable number.

15160121 is a deficient number, since it is larger than the sum of its proper divisors (409771).

15160121 is an equidigital number, since it uses as much as digits as its factorization.

15160121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409770.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 15160121 is about 3893.6000051366. The cubic root of 15160121 is about 247.4956418646.

Adding to 15160121 its reverse (12106151), we get a palindrome (27266272).

The spelling of 15160121 in words is "fifteen million, one hundred sixty thousand, one hundred twenty-one".