52216647 has 16 divisors (see below), whose sum is σ = 83028480. Its totient is φ = 28540512.

The previous prime is 52216631. The next prime is 52216649. The reversal of 52216647 is 74661225.

52216647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52216647 - 2⁴ = 52216631 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52216649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53572 + ... + 54537.

It is an arithmetic number, because the mean of its divisors is an integer number (5189280).

Almost surely, 2^52216647 is an apocalyptic number.

52216647 is a deficient number, since it is larger than the sum of its proper divisors (30811833).

52216647 is a wasteful number, since it uses less digits than its factorization.

52216647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108142.

The product of its digits is 20160, while the sum is 33.

The square root of 52216647 is about 7226.1087038599. The cubic root of 52216647 is about 373.7687547402.

The spelling of 52216647 in words is "fifty-two million, two hundred sixteen thousand, six hundred forty-seven".