5165021 has 2 divisors, whose sum is σ = 5165022. Its totient is φ = 5165020.

The previous prime is 5164993. The next prime is 5165051. The reversal of 5165021 is 1205615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5112121 + 52900 = 2261^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 5165021 - 2¹⁰ = 5163997 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 5164984 and 5165002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5165051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2582510 + 2582511.

It is an arithmetic number, because the mean of its divisors is an integer number (2582511).

Almost surely, 2^5165021 is an apocalyptic number.

It is an amenable number.

5165021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5165021 is an equidigital number, since it uses as much as digits as its factorization.

5165021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 5165021 is about 2272.6682555974. The cubic root of 5165021 is about 172.8584829517.

The spelling of 5165021 in words is "five million, one hundred sixty-five thousand, twenty-one".