55500555505501 has 16 divisors (see below), whose sum is σ = 55856784312000. Its totient is φ = 55145448787968.

The previous prime is 55500555505429. The next prime is 55500555505511. The reversal of 55500555505501 is 10550555500555.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55500555505501 - 2³⁵ = 55466195767133 is a prime.

It is a super-2 number, since 2×55500555505501² (a number of 28 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 (55500555505511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947904175 + ... + 947962723.

It is an arithmetic number, because the mean of its divisors is an integer number (3491049019500).

Almost surely, 2^{55500555505501} is an apocalyptic number.

It is an amenable number.

55500555505501 is a deficient number, since it is larger than the sum of its proper divisors (356228806499).

55500555505501 is a wasteful number, since it uses less digits than its factorization.

55500555505501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68028.

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

The spelling of 55500555505501 in words is "fifty-five trillion, five hundred billion, five hundred fifty-five million, five hundred five thousand, five hundred one".