45505505550 has 48 divisors (see below), whose sum is σ = 114538061952. Its totient is φ = 11953682400.

The previous prime is 45505505537. The next prime is 45505505561. The reversal of 45505505550 is 5550550554.

It is a super-2 number, since 2×45505505550² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45505505499 and 45505505508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2253906 + ... + 2274005.

It is an arithmetic number, because the mean of its divisors is an integer number (2386209624).

Almost surely, 2^45505505550 is an apocalyptic number.

45505505550 is an abundant number, since it is smaller than the sum of its proper divisors (69032556402).

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

45505505550 is a wasteful number, since it uses less digits than its factorization.

45505505550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527993 (or 4527988 counting only the distinct ones).

The product of its (nonzero) digits is 312500, while the sum is 39.

The spelling of 45505505550 in words is "forty-five billion, five hundred five million, five hundred five thousand, five hundred fifty".