501300421 has 4 divisors (see below), whose sum is σ = 506933100. Its totient is φ = 495667744.

The previous prime is 501300413. The next prime is 501300509. The reversal of 501300421 is 124003105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61936900 + 439363521 = 7870^2 + 20961^2 .

It is a cyclic number.

It is not a de Polignac number, because 501300421 - 2³ = 501300413 is a prime.

It is a super-2 number, since 2×501300421² = 502604224189554482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501300395 and 501300404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501301421) 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, 2816206 + ... + 2816383.

It is an arithmetic number, because the mean of its divisors is an integer number (126733275).

Almost surely, 2^501300421 is an apocalyptic number.

It is an amenable number.

501300421 is a deficient number, since it is larger than the sum of its proper divisors (5632679).

501300421 is an equidigital number, since it uses as much as digits as its factorization.

501300421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632678.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 501300421 is about 22389.7391900844. The cubic root of 501300421 is about 794.3880268556.

Adding to 501300421 its reverse (124003105), we get a palindrome (625303526).

The spelling of 501300421 in words is "five hundred one million, three hundred thousand, four hundred twenty-one".