86813251 has 12 divisors (see below), whose sum is σ = 101167248. Its totient is φ = 74278512.

The previous prime is 86813239. The next prime is 86813257. The reversal of 86813251 is 15231868.

It is not a de Polignac number, because 86813251 - 2⁷ = 86813123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86813257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34405 + ... + 36841.

It is an arithmetic number, because the mean of its divisors is an integer number (8430604).

Almost surely, 2^86813251 is an apocalyptic number.

86813251 is a deficient number, since it is larger than the sum of its proper divisors (14353997).

86813251 is a wasteful number, since it uses less digits than its factorization.

86813251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178 (or 3171 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 86813251 is about 9317.3628779822. The cubic root of 86813251 is about 442.7874876474.

The spelling of 86813251 in words is "eighty-six million, eight hundred thirteen thousand, two hundred fifty-one".