5255021 has 2 divisors, whose sum is σ = 5255022. Its totient is φ = 5255020.

The previous prime is 5255009. The next prime is 5255053. The reversal of 5255021 is 1205525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4708900 + 546121 = 2170^2 + 739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5255021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5254984 and 5255002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5252021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627510 + 2627511.

It is an arithmetic number, because the mean of its divisors is an integer number (2627511).

Almost surely, 2^5255021 is an apocalyptic number.

It is an amenable number.

5255021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5255021 is an equidigital number, since it uses as much as digits as its factorization.

5255021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 5255021 is about 2292.3832576600. The cubic root of 5255021 is about 173.8567213516.

The spelling of 5255021 in words is "five million, two hundred fifty-five thousand, twenty-one".