55263205403 has 24 divisors (see below), whose sum is σ = 66928094688. Its totient is φ = 44688074112.

The previous prime is 55263205391. The next prime is 55263205451. The reversal of 55263205403 is 30450236255.

It is a de Polignac number, because none of the positive numbers 2^k-55263205403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55263205493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168101 + ... + 372537.

It is an arithmetic number, because the mean of its divisors is an integer number (2788670612).

Almost surely, 2^55263205403 is an apocalyptic number.

55263205403 is a deficient number, since it is larger than the sum of its proper divisors (11664889285).

55263205403 is a wasteful number, since it uses less digits than its factorization.

55263205403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204563 (or 204540 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 55263205403 in words is "fifty-five billion, two hundred sixty-three million, two hundred five thousand, four hundred three".