7135861 has 2 divisors, whose sum is σ = 7135862. Its totient is φ = 7135860.

The previous prime is 7135853. The next prime is 7135871. The reversal of 7135861 is 1685317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6812100 + 323761 = 2610^2 + 569^2 .

It is an emirp because it is prime and its reverse (1685317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7135861 - 2³ = 7135853 is a prime.

It is a super-2 number, since 2×7135861² = 101841024422642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7135831) 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, 3567930 + 3567931.

It is an arithmetic number, because the mean of its divisors is an integer number (3567931).

Almost surely, 2^7135861 is an apocalyptic number.

It is an amenable number.

7135861 is a deficient number, since it is larger than the sum of its proper divisors (1).

7135861 is an equidigital number, since it uses as much as digits as its factorization.

7135861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 7135861 is about 2671.3032399935. The cubic root of 7135861 is about 192.5227813596.

The spelling of 7135861 in words is "seven million, one hundred thirty-five thousand, eight hundred sixty-one".