545001243 has 4 divisors (see below), whose sum is σ = 726668328. Its totient is φ = 363334160.

The previous prime is 545001241. The next prime is 545001257. The reversal of 545001243 is 342100545.

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 545001243 - 2¹ = 545001241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545001241) 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, 90833538 + ... + 90833543.

It is an arithmetic number, because the mean of its divisors is an integer number (181667082).

Almost surely, 2^545001243 is an apocalyptic number.

545001243 is a deficient number, since it is larger than the sum of its proper divisors (181667085).

545001243 is a wasteful number, since it uses less digits than its factorization.

545001243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181667084.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 545001243 is about 23345.2616819774. The cubic root of 545001243 is about 816.8315380212.

Adding to 545001243 its reverse (342100545), we get a palindrome (887101788).

The spelling of 545001243 in words is "five hundred forty-five million, one thousand, two hundred forty-three".