2516081 has 4 divisors (see below), whose sum is σ = 2530164. Its totient is φ = 2502000.

The previous prime is 2516077. The next prime is 2516089. The reversal of 2516081 is 1806152.

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 839056 + 1677025 = 916^2 + 1295^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516081 - 2² = 2516077 is a prime.

It is a super-2 number, since 2×2516081² = 12661327197122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2516089) 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, 6770 + ... + 7131.

It is an arithmetic number, because the mean of its divisors is an integer number (632541).

2^2516081 is an apocalyptic number.

It is an amenable number.

2516081 is a deficient number, since it is larger than the sum of its proper divisors (14083).

2516081 is a wasteful number, since it uses less digits than its factorization.

2516081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14082.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2516081 is about 1586.2159373805. The cubic root of 2516081 is about 136.0112627639.

The spelling of 2516081 in words is "two million, five hundred sixteen thousand, eighty-one".