55550405555 has 8 divisors (see below), whose sum is σ = 70581691872. Its totient is φ = 41826187648.

The previous prime is 55550405551. The next prime is 55550405563.

55550405555 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 55550405555 - 2² = 55550405551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55550405551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326767007 + ... + 326767176.

It is an arithmetic number, because the mean of its divisors is an integer number (8822711484).

Almost surely, 2^55550405555 is an apocalyptic number.

55550405555 is a deficient number, since it is larger than the sum of its proper divisors (15031286317).

55550405555 is a wasteful number, since it uses less digits than its factorization.

55550405555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653534205.

The product of its (nonzero) digits is 1562500, while the sum is 44.

The spelling of 55550405555 in words is "fifty-five billion, five hundred fifty million, four hundred five thousand, five hundred fifty-five".