52665570 has 96 divisors (see below), whose sum is σ = 142584624. Its totient is φ = 13478400.

The previous prime is 52665563. The next prime is 52665593. The reversal of 52665570 is 7556625.

52665570 is a `hidden beast` number, since 5 + 26 + 65 + 570 = 666.

52665570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1814409 + 50851161 = 1347^2 + 7131^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 290880 + ... + 291060.

Almost surely, 2^52665570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52665570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71292312).

52665570 is an abundant number, since it is smaller than the sum of its proper divisors (89919054).

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

52665570 is a wasteful number, since it uses less digits than its factorization.

52665570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 52665570 is about 7257.1047946133. The cubic root of 52665570 is about 374.8368356834.

It can be divided in two parts, 52665 and 570, that added together give a palindrome (53235).

The spelling of 52665570 in words is "fifty-two million, six hundred sixty-five thousand, five hundred seventy".