52105644 has 18 divisors (see below), whose sum is σ = 131711580. Its totient is φ = 17368536.

The previous prime is 52105609. The next prime is 52105661. The reversal of 52105644 is 44650125.

52105644 is a `hidden beast` number, since 5 + 2 + 10 + 5 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 723654 + ... + 723725.

It is an arithmetic number, because the mean of its divisors is an integer number (7317310).

Almost surely, 2^52105644 is an apocalyptic number.

It is an amenable number.

52105644 is an abundant number, since it is smaller than the sum of its proper divisors (79605936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52105644 is a wasteful number, since it uses less digits than its factorization.

52105644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447389 (or 1447384 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 52105644 is about 7218.4239277006. The cubic root of 52105644 is about 373.5037122688.

Adding to 52105644 its reverse (44650125), we get a palindrome (96755769).

The spelling of 52105644 in words is "fifty-two million, one hundred five thousand, six hundred forty-four".