52569378 has 64 divisors (see below), whose sum is σ = 121806720. Its totient is φ = 16790976.

The previous prime is 52569347. The next prime is 52569379. The reversal of 52569378 is 87396525.

It is a happy number.

52569378 is a `hidden beast` number, since 52 + 569 + 37 + 8 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52569379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165676 + ... + 165992.

It is an arithmetic number, because the mean of its divisors is an integer number (1903230).

Almost surely, 2^52569378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52569378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60903360).

52569378 is an abundant number, since it is smaller than the sum of its proper divisors (69237342).

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

52569378 is a wasteful number, since it uses less digits than its factorization.

52569378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 442 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 52569378 is about 7250.4743293112. The cubic root of 52569378 is about 374.6084873899.

The spelling of 52569378 in words is "fifty-two million, five hundred sixty-nine thousand, three hundred seventy-eight".