86105057 has 4 divisors (see below), whose sum is σ = 86992836. Its totient is φ = 85217280.

The previous prime is 86105053. The next prime is 86105069. The reversal of 86105057 is 75050168.

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 63218401 + 22886656 = 7951^2 + 4784^2 .

It is a cyclic number.

It is not a de Polignac number, because 86105057 - 2² = 86105053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86105053) 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, 443744 + ... + 443937.

It is an arithmetic number, because the mean of its divisors is an integer number (21748209).

Almost surely, 2^86105057 is an apocalyptic number.

It is an amenable number.

86105057 is a deficient number, since it is larger than the sum of its proper divisors (887779).

86105057 is an equidigital number, since it uses as much as digits as its factorization.

86105057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887778.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 86105057 is about 9279.2810605133. The cubic root of 86105057 is about 441.5801603608.

The spelling of 86105057 in words is "eighty-six million, one hundred five thousand, fifty-seven".