545230521 has 24 divisors (see below), whose sum is σ = 890975904. Its totient is φ = 330441120.

The previous prime is 545230487. The next prime is 545230529. The reversal of 545230521 is 125032545.

It is a happy number.

It is not a de Polignac number, because 545230521 - 2⁷ = 545230393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545230529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99316 + ... + 104661.

It is an arithmetic number, because the mean of its divisors is an integer number (37123996).

Almost surely, 2^545230521 is an apocalyptic number.

It is an amenable number.

545230521 is a deficient number, since it is larger than the sum of its proper divisors (345745383).

545230521 is a wasteful number, since it uses less digits than its factorization.

545230521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204003 (or 203991 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 545230521 is about 23350.1717552570. The cubic root of 545230521 is about 816.9460669618.

The spelling of 545230521 in words is "five hundred forty-five million, two hundred thirty thousand, five hundred twenty-one".