85948181 has 4 divisors (see below), whose sum is σ = 93761664. Its totient is φ = 78134700.

The previous prime is 85948169. The next prime is 85948193. The reversal of 85948181 is 18184958.

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 an interprime number because it is at equal distance from previous prime (85948169) and next prime (85948193).

It is a cyclic number.

It is not a de Polignac number, because 85948181 - 2¹⁰ = 85947157 is a prime.

It is a super-2 number, since 2×85948181² = 14774179634417522, 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 (85348181) 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, 3906725 + ... + 3906746.

It is an arithmetic number, because the mean of its divisors is an integer number (23440416).

Almost surely, 2^85948181 is an apocalyptic number.

It is an amenable number.

85948181 is a deficient number, since it is larger than the sum of its proper divisors (7813483).

85948181 is a wasteful number, since it uses less digits than its factorization.

85948181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7813482.

The product of its digits is 92160, while the sum is 44.

The square root of 85948181 is about 9270.8241812689. The cubic root of 85948181 is about 441.3118236556.

The spelling of 85948181 in words is "eighty-five million, nine hundred forty-eight thousand, one hundred eighty-one".