55552777780503 has 4 divisors (see below), whose sum is σ = 74070370374008. Its totient is φ = 37035185187000.

The previous prime is 55552777780459. The next prime is 55552777780517. The reversal of 55552777780503 is 30508777725555.

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

It is not a de Polignac number, because 55552777780503 - 2⁹ = 55552777779991 is a prime.

It is a super-2 number, since 2×55552777780503² (a number of 28 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 (55552777780523) 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, 9258796296748 + ... + 9258796296753.

It is an arithmetic number, because the mean of its divisors is an integer number (18517592593502).

Almost surely, 2^{55552777780503} is an apocalyptic number.

55552777780503 is a deficient number, since it is larger than the sum of its proper divisors (18517592593505).

55552777780503 is a wasteful number, since it uses less digits than its factorization.

55552777780503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18517592593504.

The product of its (nonzero) digits is 360150000, while the sum is 66.

The spelling of 55552777780503 in words is "fifty-five trillion, five hundred fifty-two billion, seven hundred seventy-seven million, seven hundred eighty thousand, five hundred three".