52661868 has 36 divisors (see below), whose sum is σ = 142940952. Its totient is φ = 15046080.

The previous prime is 52661867. The next prime is 52661897. The reversal of 52661868 is 86816625.

52661868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (52661867) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 44193 + ... + 45368.

It is an arithmetic number, because the mean of its divisors is an integer number (3970582).

Almost surely, 2^52661868 is an apocalyptic number.

It is an amenable number.

52661868 is an abundant number, since it is smaller than the sum of its proper divisors (90279084).

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

52661868 is a wasteful number, since it uses less digits than its factorization.

52661868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89582 (or 89573 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 52661868 is about 7256.8497297381. The cubic root of 52661868 is about 374.8280527253.

The spelling of 52661868 in words is "fifty-two million, six hundred sixty-one thousand, eight hundred sixty-eight".