2472181 has 2 divisors, whose sum is σ = 2472182. Its totient is φ = 2472180.

The previous prime is 2472179. The next prime is 2472193. The reversal of 2472181 is 1812742.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2353156 + 119025 = 1534^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 2472181 - 2¹ = 2472179 is a prime.

It is a super-2 number, since 2×2472181² = 12223357793522, which contains 22 as substring.

Together with 2472179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2472121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1236090 + 1236091.

It is an arithmetic number, because the mean of its divisors is an integer number (1236091).

2^2472181 is an apocalyptic number.

It is an amenable number.

2472181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2472181 is an equidigital number, since it uses as much as digits as its factorization.

2472181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 25.

The square root of 2472181 is about 1572.3170799810. The cubic root of 2472181 is about 135.2155860385.

The spelling of 2472181 in words is "two million, four hundred seventy-two thousand, one hundred eighty-one".