55505055055493 has 4 divisors (see below), whose sum is σ = 55509146250240. Its totient is φ = 55500963860748.

The previous prime is 55505055055487. The next prime is 55505055055501. The reversal of 55505055055493 is 39455055050555.

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-55505055055493 is a prime.

It is a super-2 number, since 2×55505055055493² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505055055433) 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, 2045577023 + ... + 2045604156.

It is an arithmetic number, because the mean of its divisors is an integer number (13877286562560).

Almost surely, 2^{55505055055493} is an apocalyptic number.

It is an amenable number.

55505055055493 is a deficient number, since it is larger than the sum of its proper divisors (4091194747).

55505055055493 is a wasteful number, since it uses less digits than its factorization.

55505055055493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091194746.

The product of its (nonzero) digits is 42187500, while the sum is 56.

The spelling of 55505055055493 in words is "fifty-five trillion, five hundred five billion, fifty-five million, fifty-five thousand, four hundred ninety-three".