86957161 has 2 divisors, whose sum is σ = 86957162. Its totient is φ = 86957160.

The previous prime is 86957113. The next prime is 86957173. The reversal of 86957161 is 16175968.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46240000 + 40717161 = 6800^2 + 6381^2 .

It is a cyclic number.

It is not a de Polignac number, because 86957161 - 2¹³ = 86948969 is a prime.

It is not a weakly prime, because it can be changed into another prime (86957111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43478580 + 43478581.

It is an arithmetic number, because the mean of its divisors is an integer number (43478581).

Almost surely, 2^86957161 is an apocalyptic number.

It is an amenable number.

86957161 is a deficient number, since it is larger than the sum of its proper divisors (1).

86957161 is an equidigital number, since it uses as much as digits as its factorization.

86957161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The square root of 86957161 is about 9325.0823588856. The cubic root of 86957161 is about 443.0320216277.

The spelling of 86957161 in words is "eighty-six million, nine hundred fifty-seven thousand, one hundred sixty-one".