501243 has 4 divisors (see below), whose sum is σ = 668328. Its totient is φ = 334160.

The previous prime is 501233. The next prime is 501257. The reversal of 501243 is 342105.

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-501243 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (501203) 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, 83538 + ... + 83543.

It is an arithmetic number, because the mean of its divisors is an integer number (167082).

2⁵⁰¹²⁴³ is an apocalyptic number.

501243 is a deficient number, since it is larger than the sum of its proper divisors (167085).

501243 is a wasteful number, since it uses less digits than its factorization.

501243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167084.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 501243 is about 707.9851693362. The cubic root of 501243 is about 79.4357694880.

Adding to 501243 its reverse (342105), we get a palindrome (843348).

The spelling of 501243 in words is "five hundred one thousand, two hundred forty-three".