55427634175561 has 8 divisors (see below), whose sum is σ = 55434343246920. Its totient is φ = 55420925413248.

The previous prime is 55427634175549. The next prime is 55427634175631. The reversal of 55427634175561 is 16557143672455.

It can be written as a sum of positive squares in 4 ways, for example, as 21463577094400 + 33964057081161 = 4632880^2 + 5827869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55427634175561 - 2¹³ = 55427634167369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55427634175561.

It is not an unprimeable number, because it can be changed into a prime (55427634175531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752677635 + ... + 752751271.

It is an arithmetic number, because the mean of its divisors is an integer number (6929292905865).

Almost surely, 2^{55427634175561} is an apocalyptic number.

It is an amenable number.

55427634175561 is a deficient number, since it is larger than the sum of its proper divisors (6709071359).

55427634175561 is a wasteful number, since it uses less digits than its factorization.

55427634175561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154523.

The product of its digits is 105840000, while the sum is 61.

The spelling of 55427634175561 in words is "fifty-five trillion, four hundred twenty-seven billion, six hundred thirty-four million, one hundred seventy-five thousand, five hundred sixty-one".