52057021 has 2 divisors, whose sum is σ = 52057022. Its totient is φ = 52057020.

The previous prime is 52056989. The next prime is 52057037. The reversal of 52057021 is 12075025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41100921 + 10956100 = 6411^2 + 3310^2 .

It is a cyclic number.

It is not a de Polignac number, because 52057021 - 2⁵ = 52056989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52056983 and 52057001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52057721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26028510 + 26028511.

It is an arithmetic number, because the mean of its divisors is an integer number (26028511).

Almost surely, 2^52057021 is an apocalyptic number.

It is an amenable number.

52057021 is a deficient number, since it is larger than the sum of its proper divisors (1).

52057021 is an equidigital number, since it uses as much as digits as its factorization.

52057021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 52057021 is about 7215.0551626443. The cubic root of 52057021 is about 373.3874963048.

The spelling of 52057021 in words is "fifty-two million, fifty-seven thousand, twenty-one".