15042917 has 2 divisors, whose sum is σ = 15042918. Its totient is φ = 15042916.

The previous prime is 15042893. The next prime is 15042919. The reversal of 15042917 is 71924051.

15042917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9278116 + 5764801 = 3046^2 + 2401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15042917 is a prime.

Together with 15042919, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15042917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15042919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7521458 + 7521459.

It is an arithmetic number, because the mean of its divisors is an integer number (7521459).

Almost surely, 2^15042917 is an apocalyptic number.

It is an amenable number.

15042917 is a deficient number, since it is larger than the sum of its proper divisors (1).

15042917 is an equidigital number, since it uses as much as digits as its factorization.

15042917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 15042917 is about 3878.5199496715. The cubic root of 15042917 is about 246.8561888567.

Adding to 15042917 its reverse (71924051), we get a palindrome (86966968).

The spelling of 15042917 in words is "fifteen million, forty-two thousand, nine hundred seventeen".