55778100503 has 4 divisors (see below), whose sum is σ = 55779277248. Its totient is φ = 55776923760.

The previous prime is 55778100491. The next prime is 55778100509. The reversal of 55778100503 is 30500187755.

55778100503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55778100503 - 2²⁸ = 55509665047 is a prime.

It is a super-2 number, since 2×55778100503² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55778100509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514151 + ... + 613112.

It is an arithmetic number, because the mean of its divisors is an integer number (13944819312).

Almost surely, 2^55778100503 is an apocalyptic number.

55778100503 is a deficient number, since it is larger than the sum of its proper divisors (1176745).

55778100503 is a wasteful number, since it uses less digits than its factorization.

55778100503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176744.

The product of its (nonzero) digits is 147000, while the sum is 41.

The spelling of 55778100503 in words is "fifty-five billion, seven hundred seventy-eight million, one hundred thousand, five hundred three".