52666287 has 8 divisors (see below), whose sum is σ = 70476336. Its totient is φ = 34983552.

The previous prime is 52666283. The next prime is 52666331. The reversal of 52666287 is 78266625.

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

It is not a de Polignac number, because 52666287 - 2² = 52666283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52666283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30858 + ... + 32519.

It is an arithmetic number, because the mean of its divisors is an integer number (8809542).

Almost surely, 2^52666287 is an apocalyptic number.

52666287 is a deficient number, since it is larger than the sum of its proper divisors (17810049).

52666287 is a wasteful number, since it uses less digits than its factorization.

52666287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63657.

The product of its digits is 241920, while the sum is 42.

The square root of 52666287 is about 7257.1541943106. The cubic root of 52666287 is about 374.8385367112.

It can be divided in two parts, 5266628 and 7, that added together give a triangular number (5266635 = T₃₂₄₅).

The spelling of 52666287 in words is "fifty-two million, six hundred sixty-six thousand, two hundred eighty-seven".