7163381 has 4 divisors (see below), whose sum is σ = 7177164. Its totient is φ = 7149600.

The previous prime is 7163363. The next prime is 7163383. The reversal of 7163381 is 1833617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1833617 = 337 ⋅5441.

It can be written as a sum of positive squares in 2 ways, for example, as 5640625 + 1522756 = 2375^2 + 1234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7163381 is a prime.

It is a super-2 number, since 2×7163381² = 102628054702322, 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 (7163383) 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, 6080 + ... + 7161.

It is an arithmetic number, because the mean of its divisors is an integer number (1794291).

Almost surely, 2^7163381 is an apocalyptic number.

It is an amenable number.

7163381 is a deficient number, since it is larger than the sum of its proper divisors (13783).

7163381 is a wasteful number, since it uses less digits than its factorization.

7163381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13782.

The product of its digits is 3024, while the sum is 29.

The square root of 7163381 is about 2676.4493270002. The cubic root of 7163381 is about 192.7699568811.

Adding to 7163381 its reverse (1833617), we get a palindrome (8996998).

The spelling of 7163381 in words is "seven million, one hundred sixty-three thousand, three hundred eighty-one".