53666803 has 2 divisors, whose sum is σ = 53666804. Its totient is φ = 53666802.

The previous prime is 53666783. The next prime is 53666831. The reversal of 53666803 is 30866635.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53666803 is a prime.

It is not a weakly prime, because it can be changed into another prime (53666863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26833401 + 26833402.

It is an arithmetic number, because the mean of its divisors is an integer number (26833402).

Almost surely, 2^53666803 is an apocalyptic number.

53666803 is a deficient number, since it is larger than the sum of its proper divisors (1).

53666803 is an equidigital number, since it uses as much as digits as its factorization.

53666803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 53666803 is about 7325.7629636783. The cubic root of 53666803 is about 377.1972995559.

The spelling of 53666803 in words is "fifty-three million, six hundred sixty-six thousand, eight hundred three".