501413243 has 4 divisors (see below), whose sum is σ = 501494448. Its totient is φ = 501332040.

The previous prime is 501413203. The next prime is 501413257. The reversal of 501413243 is 342314105.

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 501413243 - 2¹⁸ = 501151099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501413203) 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, 30503 + ... + 43968.

It is an arithmetic number, because the mean of its divisors is an integer number (125373612).

Almost surely, 2^501413243 is an apocalyptic number.

501413243 is a deficient number, since it is larger than the sum of its proper divisors (81205).

501413243 is an equidigital number, since it uses as much as digits as its factorization.

501413243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81204.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 501413243 is about 22392.2585506688. The cubic root of 501413243 is about 794.4476170198.

Adding to 501413243 its reverse (342314105), we get a palindrome (843727348).

The spelling of 501413243 in words is "five hundred one million, four hundred thirteen thousand, two hundred forty-three".