53309803 has 2 divisors, whose sum is σ = 53309804. Its totient is φ = 53309802.

The previous prime is 53309779. The next prime is 53309833. The reversal of 53309803 is 30890335.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53309803 is a prime.

It is not a weakly prime, because it can be changed into another prime (53309833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26654901 + 26654902.

It is an arithmetic number, because the mean of its divisors is an integer number (26654902).

Almost surely, 2^53309803 is an apocalyptic number.

53309803 is a deficient number, since it is larger than the sum of its proper divisors (1).

53309803 is an equidigital number, since it uses as much as digits as its factorization.

53309803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 53309803 is about 7301.3562438769. The cubic root of 53309803 is about 376.3590461807.

The spelling of 53309803 in words is "fifty-three million, three hundred nine thousand, eight hundred three".