85801137 has 4 divisors (see below), whose sum is σ = 114401520. Its totient is φ = 57200756.

The previous prime is 85801129. The next prime is 85801139. The reversal of 85801137 is 73110858.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85801137 - 2³ = 85801129 is a prime.

It is a super-2 number, since 2×85801137² = 14723670220985538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85801098 and 85801107.

It is not an unprimeable number, because it can be changed into a prime (85801139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14300187 + ... + 14300192.

It is an arithmetic number, because the mean of its divisors is an integer number (28600380).

Almost surely, 2^85801137 is an apocalyptic number.

It is an amenable number.

85801137 is a deficient number, since it is larger than the sum of its proper divisors (28600383).

85801137 is a wasteful number, since it uses less digits than its factorization.

85801137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28600382.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 85801137 is about 9262.8903156628. The cubic root of 85801137 is about 441.0600079797.

The spelling of 85801137 in words is "eighty-five million, eight hundred one thousand, one hundred thirty-seven".