545251199 has 4 divisors (see below), whose sum is σ = 546230664. Its totient is φ = 544271736.

The previous prime is 545251181. The next prime is 545251207. The reversal of 545251199 is 991152545.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545251199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545251099) 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, 488897 + ... + 490010.

It is an arithmetic number, because the mean of its divisors is an integer number (136557666).

Almost surely, 2^545251199 is an apocalyptic number.

545251199 is a deficient number, since it is larger than the sum of its proper divisors (979465).

545251199 is an equidigital number, since it uses as much as digits as its factorization.

545251199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979464.

The product of its digits is 81000, while the sum is 41.

The square root of 545251199 is about 23350.6145315279. The cubic root of 545251199 is about 816.9563944573.

The spelling of 545251199 in words is "five hundred forty-five million, two hundred fifty-one thousand, one hundred ninety-nine".