55494356560 has 40 divisors (see below), whose sum is σ = 129208567176. Its totient is φ = 22166054400.

The previous prime is 55494356551. The next prime is 55494356563. The reversal of 55494356560 is 6565349455.

It can be written as a sum of positive squares in 4 ways, for example, as 32853737536 + 22640619024 = 181256^2 + 150468^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×55494356560² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55494356498 and 55494356507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55494356563) 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, 438699 + ... + 550858.

Almost surely, 2^55494356560 is an apocalyptic number.

It is an amenable number.

55494356560 is an abundant number, since it is smaller than the sum of its proper divisors (73714210616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55494356560 is a wasteful number, since it uses less digits than its factorization.

55494356560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990271 (or 990265 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 55494356560 in words is "fifty-five billion, four hundred ninety-four million, three hundred fifty-six thousand, five hundred sixty".