56550565505 has 8 divisors (see below), whose sum is σ = 77555061312. Its totient is φ = 38777530608.

The previous prime is 56550565493. The next prime is 56550565517. The reversal of 56550565505 is 50556505565.

It is an interprime number because it is at equal distance from previous prime (56550565493) and next prime (56550565517).

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 56550565505 - 2¹² = 56550561409 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 56550565505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807865187 + ... + 807865256.

It is an arithmetic number, because the mean of its divisors is an integer number (9694382664).

Almost surely, 2^56550565505 is an apocalyptic number.

It is an amenable number.

56550565505 is a deficient number, since it is larger than the sum of its proper divisors (21004495807).

56550565505 is a wasteful number, since it uses less digits than its factorization.

56550565505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615730455.

The product of its (nonzero) digits is 2812500, while the sum is 47.

The spelling of 56550565505 in words is "fifty-six billion, five hundred fifty million, five hundred sixty-five thousand, five hundred five".