55726128127 has 4 divisors (see below), whose sum is σ = 57232239736. Its totient is φ = 54220016520.

The previous prime is 55726128079. The next prime is 55726128169. The reversal of 55726128127 is 72182162755.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55726128127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55726128727) 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, 753055749 + ... + 753055822.

It is an arithmetic number, because the mean of its divisors is an integer number (14308059934).

Almost surely, 2^55726128127 is an apocalyptic number.

55726128127 is a deficient number, since it is larger than the sum of its proper divisors (1506111609).

55726128127 is a wasteful number, since it uses less digits than its factorization.

55726128127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506111608.

The product of its digits is 470400, while the sum is 46.

The spelling of 55726128127 in words is "fifty-five billion, seven hundred twenty-six million, one hundred twenty-eight thousand, one hundred twenty-seven".