86178057 has 16 divisors (see below), whose sum is σ = 131561472. Its totient is φ = 49153680.

The previous prime is 86178041. The next prime is 86178061. The reversal of 86178057 is 75087168.

It is not a de Polignac number, because 86178057 - 2⁴ = 86178041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86178007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8832 + ... + 15822.

It is an arithmetic number, because the mean of its divisors is an integer number (8222592).

Almost surely, 2^86178057 is an apocalyptic number.

It is an amenable number.

86178057 is a deficient number, since it is larger than the sum of its proper divisors (45383415).

86178057 is a wasteful number, since it uses less digits than its factorization.

86178057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 86178057 is about 9283.2137215514. The cubic root of 86178057 is about 441.7049158916.

The spelling of 86178057 in words is "eighty-six million, one hundred seventy-eight thousand, fifty-seven".