55127509057 has 4 divisors (see below), whose sum is σ = 55128751956. Its totient is φ = 55126266160.

The previous prime is 55127509043. The next prime is 55127509111. The reversal of 55127509057 is 75090572155.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34539850801 + 20587658256 = 185849^2 + 143484^2 .

It is a cyclic number.

It is not a de Polignac number, because 55127509057 - 2⁷ = 55127508929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55127508998 and 55127509016.

It is not an unprimeable number, because it can be changed into a prime (55127509027) 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, 552358 + ... + 644479.

It is an arithmetic number, because the mean of its divisors is an integer number (13782187989).

Almost surely, 2^55127509057 is an apocalyptic number.

It is an amenable number.

55127509057 is a deficient number, since it is larger than the sum of its proper divisors (1242899).

55127509057 is a wasteful number, since it uses less digits than its factorization.

55127509057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242898.

The product of its (nonzero) digits is 551250, while the sum is 46.

The spelling of 55127509057 in words is "fifty-five billion, one hundred twenty-seven million, five hundred nine thousand, fifty-seven".