86551477 has 4 divisors (see below), whose sum is σ = 86584140. Its totient is φ = 86518816.

The previous prime is 86551469. The next prime is 86551481. The reversal of 86551477 is 77415568.

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 80748196 + 5803281 = 8986^2 + 2409^2 .

It is a cyclic number.

It is not a de Polignac number, because 86551477 - 2³ = 86551469 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 (86551417) 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, 11968 + ... + 17785.

It is an arithmetic number, because the mean of its divisors is an integer number (21646035).

Almost surely, 2^86551477 is an apocalyptic number.

It is an amenable number.

86551477 is a deficient number, since it is larger than the sum of its proper divisors (32663).

86551477 is a wasteful number, since it uses less digits than its factorization.

86551477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32662.

The product of its digits is 235200, while the sum is 43.

The square root of 86551477 is about 9303.3046279266. The cubic root of 86551477 is about 442.3419836486.

The spelling of 86551477 in words is "eighty-six million, five hundred fifty-one thousand, four hundred seventy-seven".