7161139 has 2 divisors, whose sum is σ = 7161140. Its totient is φ = 7161138.

The previous prime is 7161137. The next prime is 7161151. The reversal of 7161139 is 9311617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7161139 - 2¹ = 7161137 is a prime.

Together with 7161137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7161137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3580569 + 3580570.

It is an arithmetic number, because the mean of its divisors is an integer number (3580570).

Almost surely, 2^7161139 is an apocalyptic number.

7161139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7161139 is an equidigital number, since it uses as much as digits as its factorization.

7161139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 28.

The square root of 7161139 is about 2676.0304557310. The cubic root of 7161139 is about 192.7498436906.

The spelling of 7161139 in words is "seven million, one hundred sixty-one thousand, one hundred thirty-nine".