545542220 has 24 divisors (see below), whose sum is σ = 1154006784. Its totient is φ = 216622976.

The previous prime is 545542219. The next prime is 545542237. The reversal of 545542220 is 22245545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96812 + ... + 102291.

It is an arithmetic number, because the mean of its divisors is an integer number (48083616).

Almost surely, 2^545542220 is an apocalyptic number.

It is an amenable number.

545542220 is an abundant number, since it is smaller than the sum of its proper divisors (608464564).

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

545542220 is a wasteful number, since it uses less digits than its factorization.

545542220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199249 (or 199247 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 545542220 is about 23356.8452493054. The cubic root of 545542220 is about 817.1017153545.

Adding to 545542220 its reverse (22245545), we get a palindrome (567787765).

The spelling of 545542220 in words is "five hundred forty-five million, five hundred forty-two thousand, two hundred twenty".