505550550501001 has 8 divisors (see below), whose sum is σ = 532158692635520. Its totient is φ = 478942430208912.

The previous prime is 505550550500981. The next prime is 505550550501019. The reversal of 505550550501001 is 100105055055505.

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 505550550501001 - 2⁵ = 505550550500969 is a prime.

It is a super-2 number, since 2×505550550501001² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505550550501041) 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, 66082816 + ... + 73335118.

It is an arithmetic number, because the mean of its divisors is an integer number (66519836579440).

Almost surely, 2^{505550550501001} is an apocalyptic number.

It is an amenable number.

505550550501001 is a deficient number, since it is larger than the sum of its proper divisors (26608142134519).

505550550501001 is a wasteful number, since it uses less digits than its factorization.

505550550501001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10921215.

The product of its (nonzero) digits is 78125, while the sum is 37.

The spelling of 505550550501001 in words is "five hundred five trillion, five hundred fifty billion, five hundred fifty million, five hundred one thousand, one".