52187047 has 4 divisors (see below), whose sum is σ = 56931336. Its totient is φ = 47442760.

The previous prime is 52187041. The next prime is 52187071. The reversal of 52187047 is 74078125.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52187047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52187041) 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, 2372128 + ... + 2372149.

It is an arithmetic number, because the mean of its divisors is an integer number (14232834).

Almost surely, 2^52187047 is an apocalyptic number.

52187047 is a deficient number, since it is larger than the sum of its proper divisors (4744289).

52187047 is a wasteful number, since it uses less digits than its factorization.

52187047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744288.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 52187047 is about 7224.0602849090. The cubic root of 52187047 is about 373.6981154137.

The spelling of 52187047 in words is "fifty-two million, one hundred eighty-seven thousand, forty-seven".