86228057 has 4 divisors (see below), whose sum is σ = 86503860. Its totient is φ = 85952256.

The previous prime is 86228039. The next prime is 86228069. The reversal of 86228057 is 75082268.

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 3345241 + 82882816 = 1829^2 + 9104^2 .

It is a cyclic number.

It is not a de Polignac number, because 86228057 - 2¹² = 86223961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86228057.

It is not an unprimeable number, because it can be changed into a prime (86228027) 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, 137432 + ... + 138057.

It is an arithmetic number, because the mean of its divisors is an integer number (21625965).

Almost surely, 2^86228057 is an apocalyptic number.

It is an amenable number.

86228057 is a deficient number, since it is larger than the sum of its proper divisors (275803).

86228057 is a wasteful number, since it uses less digits than its factorization.

86228057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275802.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 86228057 is about 9285.9063639475. The cubic root of 86228057 is about 441.7903242376.

The spelling of 86228057 in words is "eighty-six million, two hundred twenty-eight thousand, fifty-seven".