53415839 has 2 divisors, whose sum is σ = 53415840. Its totient is φ = 53415838.

The previous prime is 53415833. The next prime is 53415841. The reversal of 53415839 is 93851435.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53415839 is a prime.

Together with 53415841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53415833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26707919 + 26707920.

It is an arithmetic number, because the mean of its divisors is an integer number (26707920).

Almost surely, 2^53415839 is an apocalyptic number.

53415839 is a deficient number, since it is larger than the sum of its proper divisors (1).

53415839 is an equidigital number, since it uses as much as digits as its factorization.

53415839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 53415839 is about 7308.6140272968. The cubic root of 53415839 is about 376.6084135599.

The spelling of 53415839 in words is "fifty-three million, four hundred fifteen thousand, eight hundred thirty-nine".