86051509 has 4 divisors (see below), whose sum is σ = 86070816. Its totient is φ = 86032204.

The previous prime is 86051479. The next prime is 86051521. The reversal of 86051509 is 90515068.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86051509 - 2⁵ = 86051477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86051549) 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 in 3 ways as a sum of consecutive naturals, for example, 822 + ... + 13144.

It is an arithmetic number, because the mean of its divisors is an integer number (21517704).

Almost surely, 2^86051509 is an apocalyptic number.

It is an amenable number.

86051509 is a deficient number, since it is larger than the sum of its proper divisors (19307).

86051509 is a wasteful number, since it uses less digits than its factorization.

86051509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19306.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 86051509 is about 9276.3952589354. The cubic root of 86051509 is about 441.4886030677.

The spelling of 86051509 in words is "eighty-six million, fifty-one thousand, five hundred nine".