15485863 has 2 divisors, whose sum is σ = 15485864. Its totient is φ = 15485862.

The previous prime is 15485857. The next prime is 15485867. The reversal of 15485863 is 36858451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15485863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15485867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7742931 + 7742932.

It is an arithmetic number, because the mean of its divisors is an integer number (7742932).

Almost surely, 2^15485863 is an apocalyptic number.

15485863 is a deficient number, since it is larger than the sum of its proper divisors (1).

15485863 is an equidigital number, since it uses as much as digits as its factorization.

15485863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 40.

The square root of 15485863 is about 3935.2081266434. The cubic root of 15485863 is about 249.2557224023.

The spelling of 15485863 in words is "fifteen million, four hundred eighty-five thousand, eight hundred sixty-three".