501628423 has 4 divisors (see below), whose sum is σ = 504227728. Its totient is φ = 499029120.

The previous prime is 501628417. The next prime is 501628429. The reversal of 501628423 is 324826105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324826105 = 5 ⋅64965221.

It is an interprime number because it is at equal distance from previous prime (501628417) and next prime (501628429).

It is a cyclic number.

It is not a de Polignac number, because 501628423 - 2¹⁷ = 501497351 is a prime.

It is a super-2 number, since 2×501628423² = 503262149522933858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501628429) 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 3 ways as a sum of consecutive naturals, for example, 1299363 + ... + 1299748.

It is an arithmetic number, because the mean of its divisors is an integer number (126056932).

Almost surely, 2^501628423 is an apocalyptic number.

501628423 is a deficient number, since it is larger than the sum of its proper divisors (2599305).

501628423 is a wasteful number, since it uses less digits than its factorization.

501628423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599304.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 501628423 is about 22397.0628208254. The cubic root of 501628423 is about 794.5612457098.

It can be divided in two parts, 50162 and 8423, that added together give a palindrome (58585).

The spelling of 501628423 in words is "five hundred one million, six hundred twenty-eight thousand, four hundred twenty-three".