86550251 has 4 divisors (see below), whose sum is σ = 87344400. Its totient is φ = 85756104.

The previous prime is 86550241. The next prime is 86550257. The reversal of 86550251 is 15205568.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86550251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86550257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396911 + ... + 397128.

It is an arithmetic number, because the mean of its divisors is an integer number (21836100).

Almost surely, 2^86550251 is an apocalyptic number.

86550251 is a deficient number, since it is larger than the sum of its proper divisors (794149).

86550251 is a wasteful number, since it uses less digits than its factorization.

86550251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794148.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 86550251 is about 9303.2387371281. The cubic root of 86550251 is about 442.3398950502.

The spelling of 86550251 in words is "eighty-six million, five hundred fifty thousand, two hundred fifty-one".