545251242 has 16 divisors (see below), whose sum is σ = 1100695392. Its totient is φ = 180051600.

The previous prime is 545251237. The next prime is 545251249. The reversal of 545251242 is 242152545.

It is not an unprimeable number, because it can be changed into a prime (545251249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424009 + ... + 425292.

It is an arithmetic number, because the mean of its divisors is an integer number (68793462).

Almost surely, 2^545251242 is an apocalyptic number.

545251242 is an abundant number, since it is smaller than the sum of its proper divisors (555444150).

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

545251242 is a wasteful number, since it uses less digits than its factorization.

545251242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849413.

The product of its digits is 16000, while the sum is 30.

The square root of 545251242 is about 23350.6154522745. The cubic root of 545251242 is about 816.9564159331.

The spelling of 545251242 in words is "five hundred forty-five million, two hundred fifty-one thousand, two hundred forty-two".