545305090 has 64 divisors (see below), whose sum is σ = 1141361280. Its totient is φ = 185379840.

The previous prime is 545305069. The next prime is 545305093. The reversal of 545305090 is 90503545.

It is not an unprimeable number, because it can be changed into a prime (545305093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303916 + ... + 305704.

It is an arithmetic number, because the mean of its divisors is an integer number (17833770).

Almost surely, 2^545305090 is an apocalyptic number.

545305090 is an abundant number, since it is smaller than the sum of its proper divisors (596056190).

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

545305090 is a wasteful number, since it uses less digits than its factorization.

545305090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 545305090 is about 23351.7684555153. The cubic root of 545305090 is about 816.9833087472.

The spelling of 545305090 in words is "five hundred forty-five million, three hundred five thousand, ninety".