505550551100 has 36 divisors (see below), whose sum is σ = 1253765368464. Its totient is φ = 173331617280.

The previous prime is 505550551097. The next prime is 505550551141. The reversal of 505550551100 is 1155055505.

It is a super-2 number, since 2×505550551100² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361106837 + ... + 361108236.

Almost surely, 2^505550551100 is an apocalyptic number.

505550551100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505550551100 is an abundant number, since it is smaller than the sum of its proper divisors (748214817364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505550551100 is a wasteful number, since it uses less digits than its factorization.

505550551100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722215094 (or 722215087 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 32.

The spelling of 505550551100 in words is "five hundred five billion, five hundred fifty million, five hundred fifty-one thousand, one hundred".