55203563 has 2 divisors, whose sum is σ = 55203564. Its totient is φ = 55203562.

The previous prime is 55203557. The next prime is 55203583. The reversal of 55203563 is 36530255.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55203563 - 2⁸ = 55203307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (55203523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27601781 + 27601782.

It is an arithmetic number, because the mean of its divisors is an integer number (27601782).

Almost surely, 2^55203563 is an apocalyptic number.

55203563 is a deficient number, since it is larger than the sum of its proper divisors (1).

55203563 is an equidigital number, since it uses as much as digits as its factorization.

55203563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 55203563 is about 7429.9100263731. The cubic root of 55203563 is about 380.7638444410.

The spelling of 55203563 in words is "fifty-five million, two hundred three thousand, five hundred sixty-three".