55156288277 has 4 divisors (see below), whose sum is σ = 55180599180. Its totient is φ = 55131977376.

The previous prime is 55156288273. The next prime is 55156288283. The reversal of 55156288277 is 77288265155.

55156288277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 24473160721 + 30683127556 = 156439^2 + 175166^2 .

It is a cyclic number.

It is not a de Polignac number, because 55156288277 - 2² = 55156288273 is a prime.

It is a super-2 number, since 2×55156288277² (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 (55156288273) 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, 12152048 + ... + 12156585.

It is an arithmetic number, because the mean of its divisors is an integer number (13795149795).

Almost surely, 2^55156288277 is an apocalyptic number.

It is an amenable number.

55156288277 is a deficient number, since it is larger than the sum of its proper divisors (24310903).

55156288277 is a wasteful number, since it uses less digits than its factorization.

55156288277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24310902.

The product of its digits is 9408000, while the sum is 56.

The spelling of 55156288277 in words is "fifty-five billion, one hundred fifty-six million, two hundred eighty-eight thousand, two hundred seventy-seven".