15479857 has 2 divisors, whose sum is σ = 15479858. Its totient is φ = 15479856.

The previous prime is 15479839. The next prime is 15479879. The reversal of 15479857 is 75897451.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14447601 + 1032256 = 3801^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 15479857 - 2¹¹ = 15477809 is a prime.

It is not a weakly prime, because it can be changed into another prime (15479887) 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, 7739928 + 7739929.

It is an arithmetic number, because the mean of its divisors is an integer number (7739929).

Almost surely, 2^15479857 is an apocalyptic number.

It is an amenable number.

15479857 is a deficient number, since it is larger than the sum of its proper divisors (1).

15479857 is an equidigital number, since it uses as much as digits as its factorization.

15479857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 46.

The square root of 15479857 is about 3934.4449417929. Note that the first 3 decimals coincide. The cubic root of 15479857 is about 249.2234946549.

The spelling of 15479857 in words is "fifteen million, four hundred seventy-nine thousand, eight hundred fifty-seven".