86157481 has 2 divisors, whose sum is σ = 86157482. Its totient is φ = 86157480.

The previous prime is 86157443. The next prime is 86157503. The reversal of 86157481 is 18475168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63680400 + 22477081 = 7980^2 + 4741^2 .

It is a cyclic number.

It is not a de Polignac number, because 86157481 - 2⁷ = 86157353 is a prime.

It is a super-2 number, since 2×86157481² = 14846223064530722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86157431) 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, 43078740 + 43078741.

It is an arithmetic number, because the mean of its divisors is an integer number (43078741).

Almost surely, 2^86157481 is an apocalyptic number.

It is an amenable number.

86157481 is a deficient number, since it is larger than the sum of its proper divisors (1).

86157481 is an equidigital number, since it uses as much as digits as its factorization.

86157481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 40.

The square root of 86157481 is about 9282.1054184921. The cubic root of 86157481 is about 441.6697590543.

The spelling of 86157481 in words is "eighty-six million, one hundred fifty-seven thousand, four hundred eighty-one".