7138541 has 2 divisors, whose sum is σ = 7138542. Its totient is φ = 7138540.

The previous prime is 7138513. The next prime is 7138561. The reversal of 7138541 is 1458317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5982916 + 1155625 = 2446^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 7138541 - 2¹⁰ = 7137517 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7138561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569270 + 3569271.

It is an arithmetic number, because the mean of its divisors is an integer number (3569271).

Almost surely, 2^7138541 is an apocalyptic number.

It is an amenable number.

7138541 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138541 is an equidigital number, since it uses as much as digits as its factorization.

7138541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 29.

The square root of 7138541 is about 2671.8048207158. The cubic root of 7138541 is about 192.5468801322.

The spelling of 7138541 in words is "seven million, one hundred thirty-eight thousand, five hundred forty-one".