15022991 has 2 divisors, whose sum is σ = 15022992. Its totient is φ = 15022990.

The previous prime is 15022963. The next prime is 15023027. The reversal of 15022991 is 19922051.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15022991 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 (15022291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7511495 + 7511496.

It is an arithmetic number, because the mean of its divisors is an integer number (7511496).

Almost surely, 2^15022991 is an apocalyptic number.

15022991 is a deficient number, since it is larger than the sum of its proper divisors (1).

15022991 is an equidigital number, since it uses as much as digits as its factorization.

15022991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 15022991 is about 3875.9503350791. The cubic root of 15022991 is about 246.7471446273.

The spelling of 15022991 in words is "fifteen million, twenty-two thousand, nine hundred ninety-one".