55550555505001 has 4 divisors (see below), whose sum is σ = 55550593626192. Its totient is φ = 55550517383812.

The previous prime is 55550555504987. The next prime is 55550555505007. The reversal of 55550555505001 is 10050555505555.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55550555505001 - 2³⁹ = 55000799691113 is a prime.

It is a super-2 number, since 2×55550555505001² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55550555505007) 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, 16784155 + ... + 19819408.

It is an arithmetic number, because the mean of its divisors is an integer number (13887648406548).

Almost surely, 2^{55550555505001} is an apocalyptic number.

It is an amenable number.

55550555505001 is a deficient number, since it is larger than the sum of its proper divisors (38121191).

55550555505001 is a wasteful number, since it uses less digits than its factorization.

55550555505001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38121190.

The product of its (nonzero) digits is 1953125, while the sum is 46.

The spelling of 55550555505001 in words is "fifty-five trillion, five hundred fifty billion, five hundred fifty-five million, five hundred five thousand, one".