52359821 has 2 divisors, whose sum is σ = 52359822. Its totient is φ = 52359820.

The previous prime is 52359809. The next prime is 52359823. The reversal of 52359821 is 12895325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46430596 + 5929225 = 6814^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 52359821 - 2²² = 48165517 is a prime.

Together with 52359823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52359823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26179910 + 26179911.

It is an arithmetic number, because the mean of its divisors is an integer number (26179911).

Almost surely, 2^52359821 is an apocalyptic number.

It is an amenable number.

52359821 is a deficient number, since it is larger than the sum of its proper divisors (1).

52359821 is an equidigital number, since it uses as much as digits as its factorization.

52359821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 52359821 is about 7236.0086373636. The cubic root of 52359821 is about 374.1100579755.

The spelling of 52359821 in words is "fifty-two million, three hundred fifty-nine thousand, eight hundred twenty-one".