501379111 has 4 divisors (see below), whose sum is σ = 508247392. Its totient is φ = 494510832.

The previous prime is 501379031. The next prime is 501379121. The reversal of 501379111 is 111973105.

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 501379111 - 2²³ = 492990503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 501379111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501379121) 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, 3434031 + ... + 3434176.

It is an arithmetic number, because the mean of its divisors is an integer number (127061848).

Almost surely, 2^501379111 is an apocalyptic number.

501379111 is a deficient number, since it is larger than the sum of its proper divisors (6868281).

501379111 is an equidigital number, since it uses as much as digits as its factorization.

501379111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868280.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 501379111 is about 22391.4963993030. The cubic root of 501379111 is about 794.4295901715.

The spelling of 501379111 in words is "five hundred one million, three hundred seventy-nine thousand, one hundred eleven".