52636447 has 4 divisors (see below), whose sum is σ = 52663216. Its totient is φ = 52609680.

The previous prime is 52636433. The next prime is 52636477. The reversal of 52636447 is 74463625.

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 52636447 - 2¹⁵ = 52603679 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 (52636477) 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, 10179 + ... + 14452.

It is an arithmetic number, because the mean of its divisors is an integer number (13165804).

Almost surely, 2^52636447 is an apocalyptic number.

52636447 is a deficient number, since it is larger than the sum of its proper divisors (26769).

52636447 is a wasteful number, since it uses less digits than its factorization.

52636447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26768.

The product of its digits is 120960, while the sum is 37.

The square root of 52636447 is about 7255.0980007165. The cubic root of 52636447 is about 374.7677305358.

The spelling of 52636447 in words is "fifty-two million, six hundred thirty-six thousand, four hundred forty-seven".