53003917 has 2 divisors, whose sum is σ = 53003918. Its totient is φ = 53003916.

The previous prime is 53003911. The next prime is 53003953. The reversal of 53003917 is 71930035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49294441 + 3709476 = 7021^2 + 1926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53003917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53003911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26501958 + 26501959.

It is an arithmetic number, because the mean of its divisors is an integer number (26501959).

Almost surely, 2^53003917 is an apocalyptic number.

It is an amenable number.

53003917 is a deficient number, since it is larger than the sum of its proper divisors (1).

53003917 is an equidigital number, since it uses as much as digits as its factorization.

53003917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 53003917 is about 7280.3789049747. The cubic root of 53003917 is about 375.6378288868.

The spelling of 53003917 in words is "fifty-three million, three thousand, nine hundred seventeen".