55427755761 has 135 divisors (see below), whose sum is σ = 99981125937. Its totient is φ = 30511857600.

The previous prime is 55427755759. The next prime is 55427755771. The reversal of 55427755761 is 16755772455.

The square root of 55427755761 is 235431.

It is a perfect power (a square), and thus also a powerful number.

55427755761 is a `hidden beast` number, since 5 + 5 + 4 + 27 + 7 + 557 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 41280080625 + 14147675136 = 203175^2 + 118944^2 .

It is not a de Polignac number, because 55427755761 - 2¹ = 55427755759 is a prime.

It is a super-2 number, since 2×55427755761² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55427755698 and 55427755707.

It is not an unprimeable number, because it can be changed into a prime (55427755711) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 548789611 + ... + 548789711.

Almost surely, 2^55427755761 is an apocalyptic number.

55427755761 is the 235431-st square number.

55427755761 is the 117716-th centered octagonal number.

It is an amenable number.

55427755761 is a deficient number, since it is larger than the sum of its proper divisors (44553370176).

55427755761 is an equidigital number, since it uses as much as digits as its factorization.

55427755761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 148 counting only the distinct ones).

The product of its digits is 10290000, while the sum is 54.

The spelling of 55427755761 in words is "fifty-five billion, four hundred twenty-seven million, seven hundred fifty-five thousand, seven hundred sixty-one".