5115421 has 2 divisors, whose sum is σ = 5115422. Its totient is φ = 5115420.

The previous prime is 5115413. The next prime is 5115431. The reversal of 5115421 is 1245115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3663396 + 1452025 = 1914^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 5115421 - 2³ = 5115413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5115431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557710 + 2557711.

It is an arithmetic number, because the mean of its divisors is an integer number (2557711).

Almost surely, 2^5115421 is an apocalyptic number.

It is an amenable number.

5115421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5115421 is an equidigital number, since it uses as much as digits as its factorization.

5115421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 200, while the sum is 19.

The square root of 5115421 is about 2261.7296478580. The cubic root of 5115421 is about 172.3033788545.

The spelling of 5115421 in words is "five million, one hundred fifteen thousand, four hundred twenty-one".