52667865 has 12 divisors (see below), whose sum is σ = 91291044. Its totient is φ = 28089504.

The previous prime is 52667851. The next prime is 52667873. The reversal of 52667865 is 56876625.

52667865 is a `hidden beast` number, since 526 + 67 + 8 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26749584 + 25918281 = 5172^2 + 5091^2 .

It is not a de Polignac number, because 52667865 - 2⁶ = 52667801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1170397 = 52667865 / (5 + 2 + 6 + 6 + 7 + 8 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 52667865.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 585154 + ... + 585243.

It is an arithmetic number, because the mean of its divisors is an integer number (7607587).

Almost surely, 2^52667865 is an apocalyptic number.

It is an amenable number.

52667865 is a deficient number, since it is larger than the sum of its proper divisors (38623179).

52667865 is a wasteful number, since it uses less digits than its factorization.

52667865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170408 (or 1170405 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 52667865 is about 7257.2629137988. The cubic root of 52667865 is about 374.8422803413.

It can be divided in two parts, 5266 and 7865, that added together give a palindrome (13131).

The spelling of 52667865 in words is "fifty-two million, six hundred sixty-seven thousand, eight hundred sixty-five".