15016985 has 4 divisors (see below), whose sum is σ = 18020388. Its totient is φ = 12013584.

The previous prime is 15016979. The next prime is 15016987. The reversal of 15016985 is 58961051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8826841 + 6190144 = 2971^2 + 2488^2 .

It is a cyclic number.

It is not a de Polignac number, because 15016985 - 2¹⁰ = 15015961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15016987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501694 + ... + 1501703.

It is an arithmetic number, because the mean of its divisors is an integer number (4505097).

Almost surely, 2^15016985 is an apocalyptic number.

It is an amenable number.

15016985 is a deficient number, since it is larger than the sum of its proper divisors (3003403).

15016985 is an equidigital number, since it uses as much as digits as its factorization.

15016985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003402.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 15016985 is about 3875.1754798977. The cubic root of 15016985 is about 246.7142581250.

The spelling of 15016985 in words is "fifteen million, sixteen thousand, nine hundred eighty-five".