545174521 has 4 divisors (see below), whose sum is σ = 545354100. Its totient is φ = 544994944.

The previous prime is 545174519. The next prime is 545174549. The reversal of 545174521 is 125471545.

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

It can be written as a sum of positive squares in 2 ways, for example, as 338964921 + 206209600 = 18411^2 + 14360^2 .

It is a cyclic number.

It is not a de Polignac number, because 545174521 - 2¹ = 545174519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545174321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85156 + ... + 91333.

It is an arithmetic number, because the mean of its divisors is an integer number (136338525).

Almost surely, 2^545174521 is an apocalyptic number.

It is an amenable number.

545174521 is a deficient number, since it is larger than the sum of its proper divisors (179579).

545174521 is a wasteful number, since it uses less digits than its factorization.

545174521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179578.

The product of its digits is 28000, while the sum is 34.

The square root of 545174521 is about 23348.9725898165. The cubic root of 545174521 is about 816.9180968070.

The spelling of 545174521 in words is "five hundred forty-five million, one hundred seventy-four thousand, five hundred twenty-one".