55055505553 has 4 divisors (see below), whose sum is σ = 57953163760. Its totient is φ = 52157847348.

The previous prime is 55055505551. The next prime is 55055505599. The reversal of 55055505553 is 35550555055.

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 not a de Polignac number, because 55055505553 - 2¹ = 55055505551 is a prime.

It is a super-2 number, since 2×55055505553² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55055505551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1448829075 + ... + 1448829112.

It is an arithmetic number, because the mean of its divisors is an integer number (14488290940).

Almost surely, 2^55055505553 is an apocalyptic number.

It is an amenable number.

55055505553 is a deficient number, since it is larger than the sum of its proper divisors (2897658207).

55055505553 is a wasteful number, since it uses less digits than its factorization.

55055505553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897658206.

The product of its (nonzero) digits is 1171875, while the sum is 43.

The spelling of 55055505553 in words is "fifty-five billion, fifty-five million, five hundred five thousand, five hundred fifty-three".