53866663 has 2 divisors, whose sum is σ = 53866664. Its totient is φ = 53866662.

The previous prime is 53866651. The next prime is 53866697. The reversal of 53866663 is 36666835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53866663 - 2¹³ = 53858471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53866613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26933331 + 26933332.

It is an arithmetic number, because the mean of its divisors is an integer number (26933332).

Almost surely, 2^53866663 is an apocalyptic number.

53866663 is a deficient number, since it is larger than the sum of its proper divisors (1).

53866663 is an equidigital number, since it uses as much as digits as its factorization.

53866663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The square root of 53866663 is about 7339.3911872852. The cubic root of 53866663 is about 377.6649583878.

The spelling of 53866663 in words is "fifty-three million, eight hundred sixty-six thousand, six hundred sixty-three".