85452144 has 20 divisors (see below), whose sum is σ = 220751496. Its totient is φ = 28484032.

The previous prime is 85452113. The next prime is 85452173. The reversal of 85452144 is 44125458.

It is a happy number.

It is a super-3 number, since 3×85452144³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890079 + ... + 890174.

Almost surely, 2^85452144 is an apocalyptic number.

It is an amenable number.

85452144 is an abundant number, since it is smaller than the sum of its proper divisors (135299352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85452144 is a wasteful number, since it uses less digits than its factorization.

85452144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780264 (or 1780258 counting only the distinct ones).

The product of its digits is 25600, while the sum is 33.

The square root of 85452144 is about 9244.0328861380. The cubic root of 85452144 is about 440.4611968570.

The spelling of 85452144 in words is "eighty-five million, four hundred fifty-two thousand, one hundred forty-four".