86210545 has 4 divisors (see below), whose sum is σ = 103452660. Its totient is φ = 68968432.

The previous prime is 86210539. The next prime is 86210557. The reversal of 86210545 is 54501268.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26132544 + 60078001 = 5112^2 + 7751^2 .

It is a cyclic number.

It is not a de Polignac number, because 86210545 - 2¹¹ = 86208497 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8621050 + ... + 8621059.

It is an arithmetic number, because the mean of its divisors is an integer number (25863165).

Almost surely, 2^86210545 is an apocalyptic number.

It is an amenable number.

86210545 is a deficient number, since it is larger than the sum of its proper divisors (17242115).

86210545 is a wasteful number, since it uses less digits than its factorization.

86210545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17242114.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 86210545 is about 9284.9633817264. The cubic root of 86210545 is about 441.7604145762.

The spelling of 86210545 in words is "eighty-six million, two hundred ten thousand, five hundred forty-five".