501430541 has 2 divisors, whose sum is σ = 501430542. Its totient is φ = 501430540.

The previous prime is 501430529. The next prime is 501430571. The reversal of 501430541 is 145034105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499701316 + 1729225 = 22354^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 501430541 - 2²² = 497236237 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501430511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250715270 + 250715271.

It is an arithmetic number, because the mean of its divisors is an integer number (250715271).

Almost surely, 2^501430541 is an apocalyptic number.

It is an amenable number.

501430541 is a deficient number, since it is larger than the sum of its proper divisors (1).

501430541 is an equidigital number, since it uses as much as digits as its factorization.

501430541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 501430541 is about 22392.6447968970. The cubic root of 501430541 is about 794.4567526626.

Adding to 501430541 its reverse (145034105), we get a palindrome (646464646).

The spelling of 501430541 in words is "five hundred one million, four hundred thirty thousand, five hundred forty-one".