2513081 has 4 divisors (see below), whose sum is σ = 2516964. Its totient is φ = 2509200.

The previous prime is 2513057. The next prime is 2513083. The reversal of 2513081 is 1803152.

2513081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1666681 + 846400 = 1291^2 + 920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2513081 is a prime.

It is a super-2 number, since 2×2513081² = 12631152225122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513083) 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 in 3 ways as a sum of consecutive naturals, for example, 710 + ... + 2351.

It is an arithmetic number, because the mean of its divisors is an integer number (629241).

2^2513081 is an apocalyptic number.

It is an amenable number.

2513081 is a deficient number, since it is larger than the sum of its proper divisors (3883).

2513081 is an equidigital number, since it uses as much as digits as its factorization.

2513081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2513081 is about 1585.2700085474. The cubic root of 2513081 is about 135.9571844749.

The spelling of 2513081 in words is "two million, five hundred thirteen thousand, eighty-one".