545511020 has 12 divisors (see below), whose sum is σ = 1145573184. Its totient is φ = 218204400.

The previous prime is 545511019. The next prime is 545511053. The reversal of 545511020 is 20115545.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13637756 + ... + 13637795.

It is an arithmetic number, because the mean of its divisors is an integer number (95464432).

Almost surely, 2^545511020 is an apocalyptic number.

It is an amenable number.

545511020 is an abundant number, since it is smaller than the sum of its proper divisors (600062164).

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

545511020 is a wasteful number, since it uses less digits than its factorization.

545511020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27275560 (or 27275558 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 545511020 is about 23356.1773413373. The cubic root of 545511020 is about 817.0861381553.

Adding to 545511020 its reverse (20115545), we get a palindrome (565626565).

The spelling of 545511020 in words is "five hundred forty-five million, five hundred eleven thousand, twenty".