86253218 has 4 divisors (see below), whose sum is σ = 129379830. Its totient is φ = 43126608.

The previous prime is 86253203. The next prime is 86253247. The reversal of 86253218 is 81235268.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 85618009 + 635209 = 9253^2 + 797^2 .

It is a Curzon number.

It is an unprimeable number.

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, 21563303 + ... + 21563306.

Almost surely, 2^86253218 is an apocalyptic number.

86253218 is a deficient number, since it is larger than the sum of its proper divisors (43126612).

86253218 is a wasteful number, since it uses less digits than its factorization.

86253218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43126611.

The product of its digits is 23040, while the sum is 35.

The square root of 86253218 is about 9287.2610601835. The cubic root of 86253218 is about 441.8332909382.

The spelling of 86253218 in words is "eighty-six million, two hundred fifty-three thousand, two hundred eighteen".