52782858 has 48 divisors (see below), whose sum is σ = 121886856. Its totient is φ = 16450560.

The previous prime is 52782853. The next prime is 52782883. The reversal of 52782858 is 85828725.

It can be written as a sum of positive squares in 4 ways, for example, as 34609689 + 18173169 = 5883^2 + 4263^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52782853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54910 + ... + 55862.

Almost surely, 2^52782858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52782858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60943428).

52782858 is an abundant number, since it is smaller than the sum of its proper divisors (69103998).

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

52782858 is a wasteful number, since it uses less digits than its factorization.

52782858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159 (or 1156 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 52782858 is about 7265.1812090271. The cubic root of 52782858 is about 375.1148874654.

The spelling of 52782858 in words is "fifty-two million, seven hundred eighty-two thousand, eight hundred fifty-eight".