2516985 has 12 divisors (see below), whose sum is σ = 4362852. Its totient is φ = 1342368.

The previous prime is 2516981. The next prime is 2516993. The reversal of 2516985 is 5896152.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 710649 + 1806336 = 843^2 + 1344^2 .

It is not a de Polignac number, because 2516985 - 2² = 2516981 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2516981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27922 + ... + 28011.

It is an arithmetic number, because the mean of its divisors is an integer number (363571).

2^2516985 is an apocalyptic number.

It is an amenable number.

2516985 is a deficient number, since it is larger than the sum of its proper divisors (1845867).

2516985 is a wasteful number, since it uses less digits than its factorization.

2516985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55944 (or 55941 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 2516985 is about 1586.5008666874. The cubic root of 2516985 is about 136.0275499262.

The spelling of 2516985 in words is "two million, five hundred sixteen thousand, nine hundred eighty-five".