15391151 has 2 divisors, whose sum is σ = 15391152. Its totient is φ = 15391150.

The previous prime is 15391133. The next prime is 15391157. The reversal of 15391151 is 15119351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15391151 - 2¹⁰ = 15390127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15391151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15391157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7695575 + 7695576.

It is an arithmetic number, because the mean of its divisors is an integer number (7695576).

Almost surely, 2^15391151 is an apocalyptic number.

15391151 is a deficient number, since it is larger than the sum of its proper divisors (1).

15391151 is an equidigital number, since it uses as much as digits as its factorization.

15391151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 675, while the sum is 26.

The square root of 15391151 is about 3923.1557450603. The cubic root of 15391151 is about 248.7465310998.

The spelling of 15391151 in words is "fifteen million, three hundred ninety-one thousand, one hundred fifty-one".