55000135503 has 12 divisors (see below), whose sum is σ = 81134952288. Its totient is φ = 35886612960.

The previous prime is 55000135499. The next prime is 55000135511. The reversal of 55000135503 is 30553100055.

It is not a de Polignac number, because 55000135503 - 2² = 55000135499 is a prime.

It is a super-2 number, since 2×55000135503² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000135573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65011558 + ... + 65012403.

It is an arithmetic number, because the mean of its divisors is an integer number (6761246024).

Almost surely, 2^55000135503 is an apocalyptic number.

55000135503 is a deficient number, since it is larger than the sum of its proper divisors (26134816785).

55000135503 is a wasteful number, since it uses less digits than its factorization.

55000135503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130024014 (or 130024011 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 27.

Adding to 55000135503 its reverse (30553100055), we get a palindrome (85553235558).

The spelling of 55000135503 in words is "fifty-five billion, one hundred thirty-five thousand, five hundred three".