52621643 has 4 divisors (see below), whose sum is σ = 52894488. Its totient is φ = 52348800.

The previous prime is 52621609. The next prime is 52621691. The reversal of 52621643 is 34612625.

52621643 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 a cyclic number.

It is not a de Polignac number, because 52621643 - 2¹² = 52617547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52621693) 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 3 ways as a sum of consecutive naturals, for example, 136133 + ... + 136518.

It is an arithmetic number, because the mean of its divisors is an integer number (13223622).

Almost surely, 2^52621643 is an apocalyptic number.

52621643 is a deficient number, since it is larger than the sum of its proper divisors (272845).

52621643 is a wasteful number, since it uses less digits than its factorization.

52621643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272844.

The product of its digits is 8640, while the sum is 29.

The square root of 52621643 is about 7254.0776808634. The cubic root of 52621643 is about 374.7325927684.

The spelling of 52621643 in words is "fifty-two million, six hundred twenty-one thousand, six hundred forty-three".