55423243672550 has 48 divisors (see below), whose sum is σ = 111027256165392. Its totient is φ = 20462080118400.

The previous prime is 55423243672523. The next prime is 55423243672571. The reversal of 55423243672550 is 5527634232455.

It is a super-2 number, since 2×55423243672550² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55423243672492 and 55423243672501.

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, 3134297 + ... + 10985003.

It is an arithmetic number, because the mean of its divisors is an integer number (2313067836779).

Almost surely, 2^{55423243672550} is an apocalyptic number.

55423243672550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55423243672550 is an abundant number, since it is smaller than the sum of its proper divisors (55604012492842).

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

55423243672550 is a wasteful number, since it uses less digits than its factorization.

55423243672550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7861593 (or 7861588 counting only the distinct ones).

The product of its (nonzero) digits is 30240000, while the sum is 53.

The spelling of 55423243672550 in words is "fifty-five trillion, four hundred twenty-three billion, two hundred forty-three million, six hundred seventy-two thousand, five hundred fifty".