545220513 has 12 divisors (see below), whose sum is σ = 787790848. Its totient is φ = 363364920.

The previous prime is 545220491. The next prime is 545220563. The reversal of 545220513 is 315022545.

It is a happy number.

545220513 is a `hidden beast` number, since 5 + 452 + 205 + 1 + 3 = 666.

It is not a de Polignac number, because 545220513 - 2⁶ = 545220449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545220563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28068 + ... + 43338.

Almost surely, 2^545220513 is an apocalyptic number.

It is an amenable number.

545220513 is a deficient number, since it is larger than the sum of its proper divisors (242570335).

545220513 is a wasteful number, since it uses less digits than its factorization.

545220513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19244 (or 19241 counting only the distinct ones).

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

The square root of 545220513 is about 23349.9574517814. The cubic root of 545220513 is about 816.9410684361.

The spelling of 545220513 in words is "five hundred forty-five million, two hundred twenty thousand, five hundred thirteen".