85390523 has 8 divisors (see below), whose sum is σ = 89640960. Its totient is φ = 81233640.

The previous prime is 85390519. The next prime is 85390537. The reversal of 85390523 is 32509358.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85390523 - 2² = 85390519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85390583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21515 + ... + 25172.

It is an arithmetic number, because the mean of its divisors is an integer number (11205120).

Almost surely, 2^85390523 is an apocalyptic number.

85390523 is a deficient number, since it is larger than the sum of its proper divisors (4250437).

85390523 is a wasteful number, since it uses less digits than its factorization.

85390523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46777.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 85390523 is about 9240.6992700769. The cubic root of 85390523 is about 440.3552967010.

The spelling of 85390523 in words is "eighty-five million, three hundred ninety thousand, five hundred twenty-three".