85435381 has 4 divisors (see below), whose sum is σ = 89932000. Its totient is φ = 80938764.

The previous prime is 85435379. The next prime is 85435391. The reversal of 85435381 is 18353458.

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 85435381 - 2¹ = 85435379 is a prime.

It is a super-2 number, since 2×85435381² = 14598408653230322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85435381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85435321) 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, 2248281 + ... + 2248318.

It is an arithmetic number, because the mean of its divisors is an integer number (22483000).

Almost surely, 2^85435381 is an apocalyptic number.

It is an amenable number.

85435381 is a deficient number, since it is larger than the sum of its proper divisors (4496619).

85435381 is a wasteful number, since it uses less digits than its factorization.

85435381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4496618.

The product of its digits is 57600, while the sum is 37.

The square root of 85435381 is about 9243.1261486577. The cubic root of 85435381 is about 440.4323934685.

It can be divided in two parts, 8543 and 5381, that added together give a square (13924 = 118²).

The spelling of 85435381 in words is "eighty-five million, four hundred thirty-five thousand, three hundred eighty-one".