545431211 has 4 divisors (see below), whose sum is σ = 587387472. Its totient is φ = 503474952.

The previous prime is 545431199. The next prime is 545431219. The reversal of 545431211 is 112134545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545431211 - 2⁶ = 545431147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545431219) by changing a digit.

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, 20978111 + ... + 20978136.

It is an arithmetic number, because the mean of its divisors is an integer number (146846868).

Almost surely, 2^545431211 is an apocalyptic number.

545431211 is a deficient number, since it is larger than the sum of its proper divisors (41956261).

545431211 is a wasteful number, since it uses less digits than its factorization.

545431211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41956260.

The product of its digits is 2400, while the sum is 26.

The square root of 545431211 is about 23354.4687586766. The cubic root of 545431211 is about 817.0462892763.

Adding to 545431211 its reverse (112134545), we get a palindrome (657565756).

The spelling of 545431211 in words is "five hundred forty-five million, four hundred thirty-one thousand, two hundred eleven".