55780533075530 has 8 divisors (see below), whose sum is σ = 100404959535972. Its totient is φ = 22312213230208.

The previous prime is 55780533075521. The next prime is 55780533075577. The reversal of 55780533075530 is 3557033508755.

It can be written as a sum of positive squares in 2 ways, for example, as 55773368976649 + 7164098881 = 7468157^2 + 84641^2 .

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

It is a super-2 number, since 2×55780533075530² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2789026653767 + ... + 2789026653786.

Almost surely, 2^{55780533075530} is an apocalyptic number.

55780533075530 is a deficient number, since it is larger than the sum of its proper divisors (44624426460442).

55780533075530 is a wasteful number, since it uses less digits than its factorization.

55780533075530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5578053307560.

The product of its (nonzero) digits is 33075000, while the sum is 56.

The spelling of 55780533075530 in words is "fifty-five trillion, seven hundred eighty billion, five hundred thirty-three million, seventy-five thousand, five hundred thirty".