52905638 has 4 divisors (see below), whose sum is σ = 79358460. Its totient is φ = 26452818.

The previous prime is 52905637. The next prime is 52905647. The reversal of 52905638 is 83650925.

52905638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52905637) 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 as a sum of consecutive naturals, namely, 13226408 + ... + 13226411.

It is an arithmetic number, because the mean of its divisors is an integer number (19839615).

Almost surely, 2^52905638 is an apocalyptic number.

52905638 is a deficient number, since it is larger than the sum of its proper divisors (26452822).

52905638 is a wasteful number, since it uses less digits than its factorization.

52905638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26452821.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 52905638 is about 7273.6261933096. The cubic root of 52905638 is about 375.4055180629.

The spelling of 52905638 in words is "fifty-two million, nine hundred five thousand, six hundred thirty-eight".