52305621 has 8 divisors (see below), whose sum is σ = 69990144. Its totient is φ = 34745760.

The previous prime is 52305619. The next prime is 52305637. The reversal of 52305621 is 12650325.

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

It is not a de Polignac number, because 52305621 - 2¹ = 52305619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52305591 and 52305600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52305691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30181 + ... + 31866.

It is an arithmetic number, because the mean of its divisors is an integer number (8748768).

Almost surely, 2^52305621 is an apocalyptic number.

It is an amenable number.

52305621 is a deficient number, since it is larger than the sum of its proper divisors (17684523).

52305621 is a wasteful number, since it uses less digits than its factorization.

52305621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62331.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 52305621 is about 7232.2625090631. The cubic root of 52305621 is about 373.9809273734.

Adding to 52305621 its reverse (12650325), we get a palindrome (64955946).

The spelling of 52305621 in words is "fifty-two million, three hundred five thousand, six hundred twenty-one".