85290975 has 120 divisors (see below), whose sum is σ = 197332608. Its totient is φ = 35380800.

The previous prime is 85290971. The next prime is 85290977. The reversal of 85290975 is 57909258.

It is a happy number.

It is not a de Polignac number, because 85290975 - 2² = 85290971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 85290975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85290971) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 155652 + ... + 156198.

Almost surely, 2^85290975 is an apocalyptic number.

85290975 is an abundant number, since it is smaller than the sum of its proper divisors (112041633).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85290975 is a wasteful number, since it uses less digits than its factorization.

85290975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 85290975 is about 9235.3113103999. The cubic root of 85290975 is about 440.1841085590.

The spelling of 85290975 in words is "eighty-five million, two hundred ninety thousand, nine hundred seventy-five".