85451923 has 8 divisors (see below), whose sum is σ = 89261568. Its totient is φ = 81650184.

The previous prime is 85451921. The next prime is 85451939. The reversal of 85451923 is 32915458.

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

It is not a de Polignac number, because 85451923 - 2¹ = 85451921 is a prime.

It is a super-2 number, since 2×85451923² = 14604062288795858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85451921) 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, 35236 + ... + 37582.

It is an arithmetic number, because the mean of its divisors is an integer number (11157696).

Almost surely, 2^85451923 is an apocalyptic number.

85451923 is a deficient number, since it is larger than the sum of its proper divisors (3809645).

85451923 is a wasteful number, since it uses less digits than its factorization.

85451923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953.

The product of its digits is 43200, while the sum is 37.

The square root of 85451923 is about 9244.0209324731. The cubic root of 85451923 is about 440.4608171435.

The spelling of 85451923 in words is "eighty-five million, four hundred fifty-one thousand, nine hundred twenty-three".