501247 has 4 divisors (see below), whose sum is σ = 503496. Its totient is φ = 499000.

The previous prime is 501233. The next prime is 501257. The reversal of 501247 is 742105.

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-501247 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 (501217) 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, 748 + ... + 1249.

It is an arithmetic number, because the mean of its divisors is an integer number (125874).

2⁵⁰¹²⁴⁷ is an apocalyptic number.

501247 is a deficient number, since it is larger than the sum of its proper divisors (2249).

501247 is a wasteful number, since it uses less digits than its factorization.

501247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 501247 is about 707.9879942485. The cubic root of 501247 is about 79.4359807908.

The spelling of 501247 in words is "five hundred one thousand, two hundred forty-seven".