7137961 has 2 divisors, whose sum is σ = 7137962. Its totient is φ = 7137960.

The previous prime is 7137947. The next prime is 7137989. The reversal of 7137961 is 1697317.

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., 7123561 + 14400 = 2669^2 + 120^2 .

It is an emirp because it is prime and its reverse (1697317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7137961 - 2⁷ = 7137833 is a prime.

It is not a weakly prime, because it can be changed into another prime (7147961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3568980 + 3568981.

It is an arithmetic number, because the mean of its divisors is an integer number (3568981).

Almost surely, 2^7137961 is an apocalyptic number.

It is an amenable number.

7137961 is a deficient number, since it is larger than the sum of its proper divisors (1).

7137961 is an equidigital number, since it uses as much as digits as its factorization.

7137961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7938, while the sum is 34.

The square root of 7137961 is about 2671.6962776483. The cubic root of 7137961 is about 192.5416652377.

The spelling of 7137961 in words is "seven million, one hundred thirty-seven thousand, nine hundred sixty-one".