7002181 has 6 divisors (see below), whose sum is σ = 7438610. Its totient is φ = 6590016.

The previous prime is 7002167. The next prime is 7002197. The reversal of 7002181 is 1812007.

It can be written as a sum of positive squares in 3 ways, for example, as 1404225 + 5597956 = 1185^2 + 2366^2 .

It is not a de Polignac number, because 7002181 - 2⁷ = 7002053 is a prime.

It is a super-2 number, since 2×7002181² = 98061077513522, 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 (7002101) 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 5 ways as a sum of consecutive naturals, for example, 11826 + ... + 12403.

Almost surely, 2^7002181 is an apocalyptic number.

It is an amenable number.

7002181 is a deficient number, since it is larger than the sum of its proper divisors (436429).

7002181 is a wasteful number, since it uses less digits than its factorization.

7002181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24263 (or 24246 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 7002181 is about 2646.1634492223. The cubic root of 7002181 is about 191.3129833710.

Adding to 7002181 its reverse (1812007), we get a palindrome (8814188).

The spelling of 7002181 in words is "seven million, two thousand, one hundred eighty-one".