15131651 has 2 divisors, whose sum is σ = 15131652. Its totient is φ = 15131650.

The previous prime is 15131639. The next prime is 15131653. The reversal of 15131651 is 15613151.

It is a strong prime.

It is an emirp because it is prime and its reverse (15613151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15131651 - 2¹⁸ = 14869507 is a prime.

Together with 15131653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15131653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7565825 + 7565826.

It is an arithmetic number, because the mean of its divisors is an integer number (7565826).

Almost surely, 2^15131651 is an apocalyptic number.

15131651 is a deficient number, since it is larger than the sum of its proper divisors (1).

15131651 is an equidigital number, since it uses as much as digits as its factorization.

15131651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 23.

The square root of 15131651 is about 3889.9422874896. The cubic root of 15131651 is about 247.3406163573.

The spelling of 15131651 in words is "fifteen million, one hundred thirty-one thousand, six hundred fifty-one".