85955957 has 4 divisors (see below), whose sum is σ = 86057580. Its totient is φ = 85854336.

The previous prime is 85955953. The next prime is 85955977. The reversal of 85955957 is 75955958.

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 29495761 + 56460196 = 5431^2 + 7514^2 .

It is a cyclic number.

It is not a de Polignac number, because 85955957 - 2² = 85955953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85955899 and 85955908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85955951) 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, 49532 + ... + 51237.

It is an arithmetic number, because the mean of its divisors is an integer number (21514395).

Almost surely, 2^85955957 is an apocalyptic number.

It is an amenable number.

85955957 is a deficient number, since it is larger than the sum of its proper divisors (101623).

85955957 is a wasteful number, since it uses less digits than its factorization.

85955957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101622.

The product of its digits is 2835000, while the sum is 53.

The square root of 85955957 is about 9271.2435519729. The cubic root of 85955957 is about 441.3251322066.

Subtracting from 85955957 its reverse (75955958), we obtain a palindrome (9999999).

The spelling of 85955957 in words is "eighty-five million, nine hundred fifty-five thousand, nine hundred fifty-seven".