55533511533503 has 2 divisors, whose sum is σ = 55533511533504. Its totient is φ = 55533511533502.

The previous prime is 55533511533491. The next prime is 55533511533581. The reversal of 55533511533503 is 30533511533555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55533511533503 - 2²⁰ = 55533510484927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55533511533103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27766755766751 + 27766755766752.

It is an arithmetic number, because the mean of its divisors is an integer number (27766755766752).

Almost surely, 2^{55533511533503} is an apocalyptic number.

55533511533503 is a deficient number, since it is larger than the sum of its proper divisors (1).

55533511533503 is an equidigital number, since it uses as much as digits as its factorization.

55533511533503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3796875, while the sum is 47.

The spelling of 55533511533503 in words is "fifty-five trillion, five hundred thirty-three billion, five hundred eleven million, five hundred thirty-three thousand, five hundred three".