415265021 has 2 divisors, whose sum is σ = 415265022. Its totient is φ = 415265020.

The previous prime is 415265009. The next prime is 415265027. The reversal of 415265021 is 120562514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335805625 + 79459396 = 18325^2 + 8914^2 .

It is a cyclic number.

It is not a de Polignac number, because 415265021 - 2¹⁸ = 415002877 is a prime.

It is a super-2 number, since 2×415265021² = 344890075332260882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (415265027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207632510 + 207632511.

It is an arithmetic number, because the mean of its divisors is an integer number (207632511).

Almost surely, 2^415265021 is an apocalyptic number.

It is an amenable number.

415265021 is a deficient number, since it is larger than the sum of its proper divisors (1).

415265021 is an equidigital number, since it uses as much as digits as its factorization.

415265021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 415265021 is about 20378.0524339300. The cubic root of 415265021 is about 746.0623380117.

The spelling of 415265021 in words is "four hundred fifteen million, two hundred sixty-five thousand, twenty-one".