7138273 has 2 divisors, whose sum is σ = 7138274. Its totient is φ = 7138272.

The previous prime is 7138237. The next prime is 7138279. The reversal of 7138273 is 3728317.

Together with previous prime (7138237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3873024 + 3265249 = 1968^2 + 1807^2 .

It is an emirp because it is prime and its reverse (3728317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7138273 - 2²¹ = 5041121 is a prime.

It is equal to p₄₈₅₄₁₉ and since 7138273 and 485419 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (7138279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569136 + 3569137.

It is an arithmetic number, because the mean of its divisors is an integer number (3569137).

Almost surely, 2^7138273 is an apocalyptic number.

It is an amenable number.

7138273 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138273 is an equidigital number, since it uses as much as digits as its factorization.

7138273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 7138273 is about 2671.7546668809. The cubic root of 7138273 is about 192.5444705264.

The spelling of 7138273 in words is "seven million, one hundred thirty-eight thousand, two hundred seventy-three".