52355021 has 2 divisors, whose sum is σ = 52355022. Its totient is φ = 52355020.

The previous prime is 52354999. The next prime is 52355029. The reversal of 52355021 is 12055325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43414921 + 8940100 = 6589^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 52355021 - 2¹⁰ = 52353997 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52355029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26177510 + 26177511.

It is an arithmetic number, because the mean of its divisors is an integer number (26177511).

Almost surely, 2^52355021 is an apocalyptic number.

It is an amenable number.

52355021 is a deficient number, since it is larger than the sum of its proper divisors (1).

52355021 is an equidigital number, since it uses as much as digits as its factorization.

52355021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 52355021 is about 7235.6769551991. The cubic root of 52355021 is about 374.0986256525.

The spelling of 52355021 in words is "fifty-two million, three hundred fifty-five thousand, twenty-one".