55528181267 has 4 divisors (see below), whose sum is σ = 59799579840. Its totient is φ = 51256782696.

The previous prime is 55528181263. The next prime is 55528181299. The reversal of 55528181267 is 76218182555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76218182555 = 5 ⋅15243636511.

It is a cyclic number.

It is not a de Polignac number, because 55528181267 - 2² = 55528181263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55528181263) 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, 2135699267 + ... + 2135699292.

It is an arithmetic number, because the mean of its divisors is an integer number (14949894960).

Almost surely, 2^55528181267 is an apocalyptic number.

55528181267 is a deficient number, since it is larger than the sum of its proper divisors (4271398573).

55528181267 is a wasteful number, since it uses less digits than its factorization.

55528181267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271398572.

The product of its digits is 1344000, while the sum is 50.

The spelling of 55528181267 in words is "fifty-five billion, five hundred twenty-eight million, one hundred eighty-one thousand, two hundred sixty-seven".