55051200557 has 4 divisors (see below), whose sum is σ = 57444731040. Its totient is φ = 52657670076.

The previous prime is 55051200509. The next prime is 55051200559. The reversal of 55051200557 is 75500215055.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75500215055 = 5 ⋅15100043011.

It is a cyclic number.

It is not a de Polignac number, because 55051200557 - 2⁶ = 55051200493 is a prime.

It is a super-2 number, since 2×55051200557² (a number of 22 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 (55051200559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1196765207 + ... + 1196765252.

It is an arithmetic number, because the mean of its divisors is an integer number (14361182760).

Almost surely, 2^55051200557 is an apocalyptic number.

It is an amenable number.

55051200557 is a deficient number, since it is larger than the sum of its proper divisors (2393530483).

55051200557 is a wasteful number, since it uses less digits than its factorization.

55051200557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393530482.

The product of its (nonzero) digits is 43750, while the sum is 35.

The spelling of 55051200557 in words is "fifty-five billion, fifty-one million, two hundred thousand, five hundred fifty-seven".