7280137 has 2 divisors, whose sum is σ = 7280138. Its totient is φ = 7280136.

The previous prime is 7280129. The next prime is 7280149. The reversal of 7280137 is 7310827.

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., 6471936 + 808201 = 2544^2 + 899^2 .

It is an emirp because it is prime and its reverse (7310827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7280137 - 2³ = 7280129 is a prime.

It is not a weakly prime, because it can be changed into another prime (7280197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3640068 + 3640069.

It is an arithmetic number, because the mean of its divisors is an integer number (3640069).

Almost surely, 2^7280137 is an apocalyptic number.

It is an amenable number.

7280137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7280137 is an equidigital number, since it uses as much as digits as its factorization.

7280137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 7280137 is about 2698.1729003161. The cubic root of 7280137 is about 193.8116374132.

The spelling of 7280137 in words is "seven million, two hundred eighty thousand, one hundred thirty-seven".