56550545505 has 24 divisors (see below), whose sum is σ = 98028007272. Its totient is φ = 30158118144.

The previous prime is 56550545473. The next prime is 56550545567. The reversal of 56550545505 is 50554505565.

56550545505 is a `hidden beast` number, since 5 + 6 + 5 + 50 + 545 + 50 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 692531856 + 55858013649 = 26316^2 + 236343^2 .

It is not a de Polignac number, because 56550545505 - 2⁵ = 56550545473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 733557 + ... + 806973.

It is an arithmetic number, because the mean of its divisors is an integer number (4084500303).

Almost surely, 2^56550545505 is an apocalyptic number.

It is an amenable number.

56550545505 is a deficient number, since it is larger than the sum of its proper divisors (41477461767).

56550545505 is a wasteful number, since it uses less digits than its factorization.

56550545505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90545 (or 90542 counting only the distinct ones).

The product of its (nonzero) digits is 1875000, while the sum is 45.

The spelling of 56550545505 in words is "fifty-six billion, five hundred fifty million, five hundred forty-five thousand, five hundred five".