52785744 has 80 divisors (see below), whose sum is σ = 149722560. Its totient is φ = 15892480.

The previous prime is 52785739. The next prime is 52785763. The reversal of 52785744 is 44758725.

It is a junction number, because it is equal to n+sod(n) for n = 52785696 and 52785705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135502 + ... + 135890.

It is an arithmetic number, because the mean of its divisors is an integer number (1871532).

Almost surely, 2^52785744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52785744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74861280).

52785744 is an abundant number, since it is smaller than the sum of its proper divisors (96936816).

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

52785744 is a wasteful number, since it uses less digits than its factorization.

52785744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 662 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The square root of 52785744 is about 7265.3798248956. The cubic root of 52785744 is about 375.1217240400.

The spelling of 52785744 in words is "fifty-two million, seven hundred eighty-five thousand, seven hundred forty-four".