55775557503 has 16 divisors (see below), whose sum is σ = 83177683200. Its totient is φ = 36937452600.

The previous prime is 55775557489. The next prime is 55775557507. The reversal of 55775557503 is 30575557755.

It is not a de Polignac number, because 55775557503 - 2⁸ = 55775557247 is a prime.

It is a super-2 number, since 2×55775557503² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55775557503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55775557507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6836193 + ... + 6844346.

It is an arithmetic number, because the mean of its divisors is an integer number (5198605200).

Almost surely, 2^55775557503 is an apocalyptic number.

55775557503 is a deficient number, since it is larger than the sum of its proper divisors (27402125697).

55775557503 is a wasteful number, since it uses less digits than its factorization.

55775557503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13680699 (or 13680693 counting only the distinct ones).

The product of its (nonzero) digits is 16078125, while the sum is 54.

It can be divided in two parts, 55775 and 557503, that added together give a triangular number (613278 = T₁₁₀₇).

The spelling of 55775557503 in words is "fifty-five billion, seven hundred seventy-five million, five hundred fifty-seven thousand, five hundred three".