6415121 has 2 divisors, whose sum is σ = 6415122. Its totient is φ = 6415120.

The previous prime is 6415099. The next prime is 6415133. The reversal of 6415121 is 1215146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6225025 + 190096 = 2495^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 6415121 - 2¹⁴ = 6398737 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 = 6415093 and 6415102.

It is not a weakly prime, because it can be changed into another prime (6411121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3207560 + 3207561.

It is an arithmetic number, because the mean of its divisors is an integer number (3207561).

Almost surely, 2^6415121 is an apocalyptic number.

It is an amenable number.

6415121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6415121 is an equidigital number, since it uses as much as digits as its factorization.

6415121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 6415121 is about 2532.8089150191. The cubic root of 6415121 is about 185.8096580580.

The spelling of 6415121 in words is "six million, four hundred fifteen thousand, one hundred twenty-one".