545405550 has 48 divisors (see below), whose sum is σ = 1384078080. Its totient is φ = 142057440.

The previous prime is 545405519. The next prime is 545405561. The reversal of 545405550 is 55504545.

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, 35830 + ... + 48729.

It is an arithmetic number, because the mean of its divisors is an integer number (28834960).

Almost surely, 2^545405550 is an apocalyptic number.

545405550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

545405550 is an abundant number, since it is smaller than the sum of its proper divisors (838672530).

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

545405550 is a wasteful number, since it uses less digits than its factorization.

545405550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84617 (or 84612 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 545405550 is about 23353.9193712747. The cubic root of 545405550 is about 817.0334758342.

The spelling of 545405550 in words is "five hundred forty-five million, four hundred five thousand, five hundred fifty".