505555055501 has 8 divisors (see below), whose sum is σ = 530482841280. Its totient is φ = 480872864032.

The previous prime is 505555055491. The next prime is 505555055503. The reversal of 505555055501 is 105550555505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505555055501 - 2¹⁸ = 505554793357 is a prime.

It is a super-2 number, since 2×505555055501² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505555055503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61394360 + ... + 61402593.

It is an arithmetic number, because the mean of its divisors is an integer number (66310355160).

Almost surely, 2^505555055501 is an apocalyptic number.

It is an amenable number.

505555055501 is a deficient number, since it is larger than the sum of its proper divisors (24927785779).

505555055501 is a wasteful number, since it uses less digits than its factorization.

505555055501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122797155.

The product of its (nonzero) digits is 390625, while the sum is 41.

The spelling of 505555055501 in words is "five hundred five billion, five hundred fifty-five million, fifty-five thousand, five hundred one".