55404532505 has 24 divisors (see below), whose sum is σ = 77359386312. Its totient is φ = 37982257152.

The previous prime is 55404532453. The next prime is 55404532529. The reversal of 55404532505 is 50523540455.

55404532505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10406244121 + 44998288384 = 102011^2 + 212128^2 .

It is not a de Polignac number, because 55404532505 - 2¹⁴ = 55404516121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1045529 + ... + 1097241.

It is an arithmetic number, because the mean of its divisors is an integer number (3223307763).

Almost surely, 2^55404532505 is an apocalyptic number.

It is an amenable number.

55404532505 is a deficient number, since it is larger than the sum of its proper divisors (21954853807).

55404532505 is a wasteful number, since it uses less digits than its factorization.

55404532505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56105 (or 56098 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 38.

The spelling of 55404532505 in words is "fifty-five billion, four hundred four million, five hundred thirty-two thousand, five hundred five".