15022661 has 2 divisors, whose sum is σ = 15022662. Its totient is φ = 15022660.

The previous prime is 15022649. The next prime is 15022697. The reversal of 15022661 is 16622051.

15022661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13734436 + 1288225 = 3706^2 + 1135^2 .

It is an emirp because it is prime and its reverse (16622051) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15022661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15022061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7511330 + 7511331.

It is an arithmetic number, because the mean of its divisors is an integer number (7511331).

Almost surely, 2^15022661 is an apocalyptic number.

It is an amenable number.

15022661 is a deficient number, since it is larger than the sum of its proper divisors (1).

15022661 is an equidigital number, since it uses as much as digits as its factorization.

15022661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 15022661 is about 3875.9077646404. The cubic root of 15022661 is about 246.7453379043.

The spelling of 15022661 in words is "fifteen million, twenty-two thousand, six hundred sixty-one".