53330909 has 2 divisors, whose sum is σ = 53330910. Its totient is φ = 53330908.

The previous prime is 53330863. The next prime is 53330917. The reversal of 53330909 is 90903335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34164025 + 19166884 = 5845^2 + 4378^2 .

It is a cyclic number.

It is not a de Polignac number, because 53330909 - 2²⁰ = 52282333 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 (53330939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26665454 + 26665455.

It is an arithmetic number, because the mean of its divisors is an integer number (26665455).

Almost surely, 2^53330909 is an apocalyptic number.

It is an amenable number.

53330909 is a deficient number, since it is larger than the sum of its proper divisors (1).

53330909 is an equidigital number, since it uses as much as digits as its factorization.

53330909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10935, while the sum is 32.

The square root of 53330909 is about 7302.8014487592. The cubic root of 53330909 is about 376.4087080035.

The spelling of 53330909 in words is "fifty-three million, three hundred thirty thousand, nine hundred nine".