52866405 has 32 divisors (see below), whose sum is σ = 95193600. Its totient is φ = 27832896.

The previous prime is 52866403. The next prime is 52866421. The reversal of 52866405 is 50466825.

52866405 is a `hidden beast` number, since 5 + 2 + 8 + 6 + 640 + 5 = 666.

It is not a de Polignac number, because 52866405 - 2¹ = 52866403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52866405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52866403) 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, 8187 + ... + 13143.

It is an arithmetic number, because the mean of its divisors is an integer number (2974800).

Almost surely, 2^52866405 is an apocalyptic number.

It is an amenable number.

52866405 is a deficient number, since it is larger than the sum of its proper divisors (42327195).

52866405 is a wasteful number, since it uses less digits than its factorization.

52866405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050 (or 5044 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 52866405 is about 7270.9287577310. The cubic root of 52866405 is about 375.3126991788.

The spelling of 52866405 in words is "fifty-two million, eight hundred sixty-six thousand, four hundred five".