545521550 has 48 divisors (see below), whose sum is σ = 1161508992. Its totient is φ = 186732000.

The previous prime is 545521549. The next prime is 545521579. The reversal of 545521550 is 55125545.

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, 367109 + ... + 368591.

It is an arithmetic number, because the mean of its divisors is an integer number (24198104).

Almost surely, 2^545521550 is an apocalyptic number.

545521550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

545521550 is an abundant number, since it is smaller than the sum of its proper divisors (615987442).

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

545521550 is a wasteful number, since it uses less digits than its factorization.

545521550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553 (or 2548 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 545521550 is about 23356.4027624119. The cubic root of 545521550 is about 817.0913955265.

The spelling of 545521550 in words is "five hundred forty-five million, five hundred twenty-one thousand, five hundred fifty".