52187647 has 4 divisors (see below), whose sum is σ = 52209720. Its totient is φ = 52165576.

The previous prime is 52187599. The next prime is 52187651. The reversal of 52187647 is 74678125.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52187647 - 2⁷ = 52187519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52187657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6997 + ... + 12382.

It is an arithmetic number, because the mean of its divisors is an integer number (13052430).

Almost surely, 2^52187647 is an apocalyptic number.

52187647 is a deficient number, since it is larger than the sum of its proper divisors (22073).

52187647 is a wasteful number, since it uses less digits than its factorization.

52187647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22072.

The product of its digits is 94080, while the sum is 40.

The square root of 52187647 is about 7224.1018126823. The cubic root of 52187647 is about 373.6995475571.

The spelling of 52187647 in words is "fifty-two million, one hundred eighty-seven thousand, six hundred forty-seven".