55505110551 has 32 divisors (see below), whose sum is σ = 87794212608. Its totient is φ = 30804963840.

The previous prime is 55505110537. The next prime is 55505110559. The reversal of 55505110551 is 15501150555.

It is not a de Polignac number, because 55505110551 - 2⁵ = 55505110519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505110559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1316265 + ... + 1357778.

It is an arithmetic number, because the mean of its divisors is an integer number (2743569144).

Almost surely, 2^55505110551 is an apocalyptic number.

55505110551 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55505110551 is a deficient number, since it is larger than the sum of its proper divisors (32289102057).

55505110551 is a wasteful number, since it uses less digits than its factorization.

55505110551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674111.

The product of its (nonzero) digits is 15625, while the sum is 33.

The spelling of 55505110551 in words is "fifty-five billion, five hundred five million, one hundred ten thousand, five hundred fifty-one".