7229181 has 4 divisors (see below), whose sum is σ = 9638912. Its totient is φ = 4819452.

The previous prime is 7229143. The next prime is 7229191. The reversal of 7229181 is 1819227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7229181 - 2¹⁴ = 7212797 is a prime.

It is a super-2 number, since 2×7229181² = 104522115861522, 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 (7229141) 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, 1204861 + ... + 1204866.

It is an arithmetic number, because the mean of its divisors is an integer number (2409728).

Almost surely, 2^7229181 is an apocalyptic number.

It is an amenable number.

7229181 is a deficient number, since it is larger than the sum of its proper divisors (2409731).

7229181 is a wasteful number, since it uses less digits than its factorization.

7229181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409730.

The product of its digits is 2016, while the sum is 30.

The square root of 7229181 is about 2688.7136329479. The cubic root of 7229181 is about 193.3583951525.

The spelling of 7229181 in words is "seven million, two hundred twenty-nine thousand, one hundred eighty-one".