501340401 has 16 divisors (see below), whose sum is σ = 766686720. Its totient is φ = 323444880.

The previous prime is 501340391. The next prime is 501340439. The reversal of 501340401 is 104043105.

It is a happy number.

It is not a de Polignac number, because 501340401 - 2⁵ = 501340369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (501340451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298650 + ... + 300323.

It is an arithmetic number, because the mean of its divisors is an integer number (47917920).

Almost surely, 2^501340401 is an apocalyptic number.

It is an amenable number.

501340401 is a deficient number, since it is larger than the sum of its proper divisors (265346319).

501340401 is a wasteful number, since it uses less digits than its factorization.

501340401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599013 (or 599007 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 501340401 is about 22390.6319919738. The cubic root of 501340401 is about 794.4091444580.

Adding to 501340401 its reverse (104043105), we get a palindrome (605383506).

The spelling of 501340401 in words is "five hundred one million, three hundred forty thousand, four hundred one".