55505555501 has 8 divisors (see below), whose sum is σ = 60574065600. Its totient is φ = 50440803840.

The previous prime is 55505555491. The next prime is 55505555507. The reversal of 55505555501 is 10555550555.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55505555501 is a prime.

It is a super-2 number, since 2×55505555501² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505555507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908681 + ... + 967838.

It is an arithmetic number, because the mean of its divisors is an integer number (7571758200).

Almost surely, 2^55505555501 is an apocalyptic number.

It is an amenable number.

55505555501 is a deficient number, since it is larger than the sum of its proper divisors (5068510099).

55505555501 is a wasteful number, since it uses less digits than its factorization.

55505555501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879219.

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

The spelling of 55505555501 in words is "fifty-five billion, five hundred five million, five hundred fifty-five thousand, five hundred one".