52445821 has 2 divisors, whose sum is σ = 52445822. Its totient is φ = 52445820.

The previous prime is 52445803. The next prime is 52445839. The reversal of 52445821 is 12854425.

It is a balanced prime because it is at equal distance from previous prime (52445803) and next prime (52445839).

It can be written as a sum of positive squares in only one way, i.e., 32330596 + 20115225 = 5686^2 + 4485^2 .

It is a cyclic number.

It is not a de Polignac number, because 52445821 - 2¹¹ = 52443773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52445801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26222910 + 26222911.

It is an arithmetic number, because the mean of its divisors is an integer number (26222911).

Almost surely, 2^52445821 is an apocalyptic number.

It is an amenable number.

52445821 is a deficient number, since it is larger than the sum of its proper divisors (1).

52445821 is an equidigital number, since it uses as much as digits as its factorization.

52445821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12800, while the sum is 31.

The square root of 52445821 is about 7241.9487018343. The cubic root of 52445821 is about 374.3147687993.

The spelling of 52445821 in words is "fifty-two million, four hundred forty-five thousand, eight hundred twenty-one".