85532291 has 4 divisors (see below), whose sum is σ = 92111712. Its totient is φ = 78952872.

The previous prime is 85532263. The next prime is 85532303. The reversal of 85532291 is 19223558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19223558 = 2 ⋅9611779.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85532291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85532201) 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, 3289691 + ... + 3289716.

It is an arithmetic number, because the mean of its divisors is an integer number (23027928).

Almost surely, 2^85532291 is an apocalyptic number.

85532291 is a deficient number, since it is larger than the sum of its proper divisors (6579421).

85532291 is a wasteful number, since it uses less digits than its factorization.

85532291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6579420.

The product of its digits is 21600, while the sum is 35.

The square root of 85532291 is about 9248.3669369246. The cubic root of 85532291 is about 440.5988591436.

The spelling of 85532291 in words is "eighty-five million, five hundred thirty-two thousand, two hundred ninety-one".