501323453 has 2 divisors, whose sum is σ = 501323454. Its totient is φ = 501323452.

The previous prime is 501323447. The next prime is 501323461. The reversal of 501323453 is 354323105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448295929 + 53027524 = 21173^2 + 7282^2 .

It is a cyclic number.

It is not a de Polignac number, because 501323453 - 2²⁶ = 434214589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501323423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250661726 + 250661727.

It is an arithmetic number, because the mean of its divisors is an integer number (250661727).

Almost surely, 2^501323453 is an apocalyptic number.

It is an amenable number.

501323453 is a deficient number, since it is larger than the sum of its proper divisors (1).

501323453 is an equidigital number, since it uses as much as digits as its factorization.

501323453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 501323453 is about 22390.2535269255. The cubic root of 501323453 is about 794.4001925910.

Adding to 501323453 its reverse (354323105), we get a palindrome (855646558).

The spelling of 501323453 in words is "five hundred one million, three hundred twenty-three thousand, four hundred fifty-three".