85782901 has 4 divisors (see below), whose sum is σ = 90828972. Its totient is φ = 80736832.

The previous prime is 85782889. The next prime is 85782919. The reversal of 85782901 is 10928758.

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 60078001 + 25704900 = 7751^2 + 5070^2 .

It is a cyclic number.

It is not a de Polignac number, because 85782901 - 2⁵ = 85782869 is a prime.

It is a super-2 number, since 2×85782901² = 14717412207951602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85582901) 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, 2523010 + ... + 2523043.

It is an arithmetic number, because the mean of its divisors is an integer number (22707243).

Almost surely, 2^85782901 is an apocalyptic number.

It is an amenable number.

85782901 is a deficient number, since it is larger than the sum of its proper divisors (5046071).

85782901 is a wasteful number, since it uses less digits than its factorization.

85782901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046070.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 85782901 is about 9261.9059053739. The cubic root of 85782901 is about 441.0287584319.

The spelling of 85782901 in words is "eighty-five million, seven hundred eighty-two thousand, nine hundred one".