52765621 has 8 divisors (see below), whose sum is σ = 53469504. Its totient is φ = 52066560.

The previous prime is 52765619. The next prime is 52765639. The reversal of 52765621 is 12656725.

52765621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52765621 - 2¹ = 52765619 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 (52765681) 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 7 ways as a sum of consecutive naturals, for example, 24240 + ... + 26326.

It is an arithmetic number, because the mean of its divisors is an integer number (6683688).

Almost surely, 2^52765621 is an apocalyptic number.

It is an amenable number.

52765621 is a deficient number, since it is larger than the sum of its proper divisors (703883).

52765621 is a wasteful number, since it uses less digits than its factorization.

52765621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411.

The product of its digits is 25200, while the sum is 34.

The square root of 52765621 is about 7263.9948375532. The cubic root of 52765621 is about 375.0740499692.

The spelling of 52765621 in words is "fifty-two million, seven hundred sixty-five thousand, six hundred twenty-one".