55555555545 has 96 divisors (see below), whose sum is σ = 113800587264. Its totient is φ = 24534835200.

The previous prime is 55555555543. The next prime is 55555555619. The reversal of 55555555545 is 54555555555.

It is not a de Polignac number, because 55555555545 - 2¹ = 55555555543 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55555555491 and 55555555500.

It is not an unprimeable number, because it can be changed into a prime (55555555543) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5981305 + ... + 5990585.

It is an arithmetic number, because the mean of its divisors is an integer number (1185422784).

Almost surely, 2^55555555545 is an apocalyptic number.

It is an amenable number.

55555555545 is an abundant number, since it is smaller than the sum of its proper divisors (58245031719).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55555555545 is a wasteful number, since it uses less digits than its factorization.

55555555545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9943 (or 9940 counting only the distinct ones).

The product of its digits is 39062500, while the sum is 54.

The spelling of 55555555545 in words is "fifty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred forty-five".