2512181 has 12 divisors (see below), whose sum is σ = 2949408. Its totient is φ = 2133432.

The previous prime is 2512177. The next prime is 2512207. The reversal of 2512181 is 1812152.

It is a happy number.

2512181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2512181 - 2² = 2512177 is a prime.

It is a super-2 number, since 2×2512181² = 12622106753522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2512171) 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 11 ways as a sum of consecutive naturals, for example, 8030 + ... + 8336.

It is an arithmetic number, because the mean of its divisors is an integer number (245784).

2^2512181 is an apocalyptic number.

It is an amenable number.

2512181 is a deficient number, since it is larger than the sum of its proper divisors (437227).

2512181 is a wasteful number, since it uses less digits than its factorization.

2512181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 481 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

The square root of 2512181 is about 1584.9861198130. The cubic root of 2512181 is about 135.9409525965.

Subtracting from 2512181 its sum of digits (20), we obtain a triangular number (2512161 = T₂₂₄₁).

The spelling of 2512181 in words is "two million, five hundred twelve thousand, one hundred eighty-one".