85355057 has 4 divisors (see below), whose sum is σ = 85663476. Its totient is φ = 85046640.

The previous prime is 85355051. The next prime is 85355063. The reversal of 85355057 is 75055358.

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

It is an interprime number because it is at equal distance from previous prime (85355051) and next prime (85355063).

It can be written as a sum of positive squares in 2 ways, for example, as 55368481 + 29986576 = 7441^2 + 5476^2 .

It is a cyclic number.

It is not a de Polignac number, because 85355057 - 2¹² = 85350961 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 85355057.

It is not an unprimeable number, because it can be changed into a prime (85355051) 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, 153794 + ... + 154347.

It is an arithmetic number, because the mean of its divisors is an integer number (21415869).

Almost surely, 2^85355057 is an apocalyptic number.

It is an amenable number.

85355057 is a deficient number, since it is larger than the sum of its proper divisors (308419).

85355057 is a wasteful number, since it uses less digits than its factorization.

85355057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308418.

The product of its (nonzero) digits is 105000, while the sum is 38.

The square root of 85355057 is about 9238.7800601595. The cubic root of 85355057 is about 440.2943227073.

The spelling of 85355057 in words is "eighty-five million, three hundred fifty-five thousand, fifty-seven".