85355957 has 4 divisors (see below), whose sum is σ = 85424076. Its totient is φ = 85287840.

The previous prime is 85355953. The next prime is 85356017. The reversal of 85355957 is 75955358.

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 41809156 + 43546801 = 6466^2 + 6599^2 .

It is a cyclic number.

It is not a de Polignac number, because 85355957 - 2² = 85355953 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 (85355953) 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, 32144 + ... + 34697.

It is an arithmetic number, because the mean of its divisors is an integer number (21356019).

Almost surely, 2^85355957 is an apocalyptic number.

It is an amenable number.

85355957 is a deficient number, since it is larger than the sum of its proper divisors (68119).

85355957 is a wasteful number, since it uses less digits than its factorization.

85355957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68118.

The product of its digits is 945000, while the sum is 47.

The square root of 85355957 is about 9238.8287677606. The cubic root of 85355957 is about 440.2958702176.

The spelling of 85355957 in words is "eighty-five million, three hundred fifty-five thousand, nine hundred fifty-seven".