15481871 has 2 divisors, whose sum is σ = 15481872. Its totient is φ = 15481870.

The previous prime is 15481859. The next prime is 15481897. The reversal of 15481871 is 17818451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15481871 - 2¹⁸ = 15219727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15481801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7740935 + 7740936.

It is an arithmetic number, because the mean of its divisors is an integer number (7740936).

Almost surely, 2^15481871 is an apocalyptic number.

15481871 is a deficient number, since it is larger than the sum of its proper divisors (1).

15481871 is an equidigital number, since it uses as much as digits as its factorization.

15481871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 35.

The square root of 15481871 is about 3934.7008780846. The cubic root of 15481871 is about 249.2343025573.

The spelling of 15481871 in words is "fifteen million, four hundred eighty-one thousand, eight hundred seventy-one".