55505025553 has 4 divisors (see below), whose sum is σ = 55540630080. Its totient is φ = 55469421028.

The previous prime is 55505025509. The next prime is 55505025557. The reversal of 55505025553 is 35552050555.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55505025553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55505025557) 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 3 ways as a sum of consecutive naturals, for example, 17799925 + ... + 17803042.

It is an arithmetic number, because the mean of its divisors is an integer number (13885157520).

Almost surely, 2^55505025553 is an apocalyptic number.

It is an amenable number.

55505025553 is a deficient number, since it is larger than the sum of its proper divisors (35604527).

55505025553 is a wasteful number, since it uses less digits than its factorization.

55505025553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35604526.

The product of its (nonzero) digits is 468750, while the sum is 40.

The spelling of 55505025553 in words is "fifty-five billion, five hundred five million, twenty-five thousand, five hundred fifty-three".