7226381 has 2 divisors, whose sum is σ = 7226382. Its totient is φ = 7226380.

The previous prime is 7226371. The next prime is 7226431. The reversal of 7226381 is 1836227.

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., 7155625 + 70756 = 2675^2 + 266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7226381 is a prime.

It is a super-2 number, since 2×7226381² = 104441164714322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7226321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3613190 + 3613191.

It is an arithmetic number, because the mean of its divisors is an integer number (3613191).

Almost surely, 2^7226381 is an apocalyptic number.

It is an amenable number.

7226381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7226381 is an equidigital number, since it uses as much as digits as its factorization.

7226381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 7226381 is about 2688.1928874246. The cubic root of 7226381 is about 193.3334281278. Note that the first 3 decimals are identical.

The spelling of 7226381 in words is "seven million, two hundred twenty-six thousand, three hundred eighty-one".