55353888450 has 144 divisors (see below), whose sum is σ = 178908400320. Its totient is φ = 11986392960.

The previous prime is 55353888449. The next prime is 55353888463. The reversal of 55353888450 is 5488835355.

It is a happy number.

55353888450 is a `hidden beast` number, since 5 + 53 + 538 + 8 + 8 + 4 + 50 = 666.

55353888450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 402589 + ... + 522288.

Almost surely, 2^55353888450 is an apocalyptic number.

55353888450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55353888450 is an abundant number, since it is smaller than the sum of its proper divisors (123554511870).

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

55353888450 is a wasteful number, since it uses less digits than its factorization.

55353888450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924921 (or 924913 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 54.

The spelling of 55353888450 in words is "fifty-five billion, three hundred fifty-three million, eight hundred eighty-eight thousand, four hundred fifty".