15206651 has 2 divisors, whose sum is σ = 15206652. Its totient is φ = 15206650.

The previous prime is 15206621. The next prime is 15206671. The reversal of 15206651 is 15660251.

15206651 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 is an emirp because it is prime and its reverse (15660251) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15206651 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15206651.

It is not a weakly prime, because it can be changed into another prime (15206621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7603325 + 7603326.

It is an arithmetic number, because the mean of its divisors is an integer number (7603326).

Almost surely, 2^15206651 is an apocalyptic number.

15206651 is a deficient number, since it is larger than the sum of its proper divisors (1).

15206651 is an equidigital number, since it uses as much as digits as its factorization.

15206651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 15206651 is about 3899.5706173885. The cubic root of 15206651 is about 247.7485908244.

The spelling of 15206651 in words is "fifteen million, two hundred six thousand, six hundred fifty-one".