52666187 has 8 divisors (see below), whose sum is σ = 63730656. Its totient is φ = 42486912.

The previous prime is 52666183. The next prime is 52666189. The reversal of 52666187 is 78166625.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52666187 - 2² = 52666183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52666183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221168 + ... + 221405.

It is an arithmetic number, because the mean of its divisors is an integer number (7966332).

Almost surely, 2^52666187 is an apocalyptic number.

52666187 is a deficient number, since it is larger than the sum of its proper divisors (11064469).

52666187 is a wasteful number, since it uses less digits than its factorization.

52666187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442597.

The product of its digits is 120960, while the sum is 41.

The square root of 52666187 is about 7257.1473045543. The cubic root of 52666187 is about 374.8382994697.

It can be divided in two parts, 5266618 and 7, that added together give a palindrome (5266625).

The spelling of 52666187 in words is "fifty-two million, six hundred sixty-six thousand, one hundred eighty-seven".