55216060550 has 48 divisors (see below), whose sum is σ = 123551139840. Its totient is φ = 17934838560.

The previous prime is 55216060541. The next prime is 55216060573. The reversal of 55216060550 is 5506061255.

It is a super-2 number, since 2×55216060550² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 55216060550.

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, 4144934 + ... + 4158233.

It is an arithmetic number, because the mean of its divisors is an integer number (2573982080).

Almost surely, 2^55216060550 is an apocalyptic number.

55216060550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55216060550 is an abundant number, since it is smaller than the sum of its proper divisors (68335079290).

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

55216060550 is a wasteful number, since it uses less digits than its factorization.

55216060550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8303205 (or 8303200 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 55216060550 in words is "fifty-five billion, two hundred sixteen million, sixty thousand, five hundred fifty".