85921075 has 6 divisors (see below), whose sum is σ = 106542164. Its totient is φ = 68736840.

The previous prime is 85921063. The next prime is 85921093. The reversal of 85921075 is 57012958.

It is a de Polignac number, because none of the positive numbers 2^k-85921075 is a prime.

It is a super-2 number, since 2×85921075² = 14764862258311250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1718397 + ... + 1718446.

Almost surely, 2^85921075 is an apocalyptic number.

85921075 is a deficient number, since it is larger than the sum of its proper divisors (20621089).

85921075 is a wasteful number, since it uses less digits than its factorization.

85921075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436853 (or 3436848 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 85921075 is about 9269.3621679164. The cubic root of 85921075 is about 441.2654257140.

The spelling of 85921075 in words is "eighty-five million, nine hundred twenty-one thousand, seventy-five".