55303663 has 2 divisors, whose sum is σ = 55303664. Its totient is φ = 55303662.

The previous prime is 55303649. The next prime is 55303679. The reversal of 55303663 is 36630355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55303663 - 2⁹ = 55303151 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55303603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27651831 + 27651832.

It is an arithmetic number, because the mean of its divisors is an integer number (27651832).

Almost surely, 2^55303663 is an apocalyptic number.

55303663 is a deficient number, since it is larger than the sum of its proper divisors (1).

55303663 is an equidigital number, since it uses as much as digits as its factorization.

55303663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 31.

The square root of 55303663 is about 7436.6432615798. The cubic root of 55303663 is about 380.9938504070.

The spelling of 55303663 in words is "fifty-five million, three hundred three thousand, six hundred sixty-three".