55563642255 has 24 divisors (see below), whose sum is σ = 97718540976. Its totient is φ = 26939946880.

The previous prime is 55563642229. The next prime is 55563642263. The reversal of 55563642255 is 55224636555.

It is a happy number.

It is not a de Polignac number, because 55563642255 - 2¹¹ = 55563640207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15304974 + ... + 15308603.

It is an arithmetic number, because the mean of its divisors is an integer number (4071605874).

Almost surely, 2^55563642255 is an apocalyptic number.

55563642255 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55563642255 is a deficient number, since it is larger than the sum of its proper divisors (42154898721).

55563642255 is a wasteful number, since it uses less digits than its factorization.

55563642255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30613607 (or 30613596 counting only the distinct ones).

The product of its digits is 5400000, while the sum is 48.

The spelling of 55563642255 in words is "fifty-five billion, five hundred sixty-three million, six hundred forty-two thousand, two hundred fifty-five".