501611449 has 2 divisors, whose sum is σ = 501611450. Its totient is φ = 501611448.

The previous prime is 501611437. The next prime is 501611459. The reversal of 501611449 is 944116105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263835049 + 237776400 = 16243^2 + 15420^2 .

It is a cyclic number.

It is not a de Polignac number, because 501611449 - 2¹¹ = 501609401 is a prime.

It is a super-2 number, since 2×501611449² = 503228091535759202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 501611449.

It is not a weakly prime, because it can be changed into another prime (501611459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250805724 + 250805725.

It is an arithmetic number, because the mean of its divisors is an integer number (250805725).

Almost surely, 2^501611449 is an apocalyptic number.

It is an amenable number.

501611449 is a deficient number, since it is larger than the sum of its proper divisors (1).

501611449 is an equidigital number, since it uses as much as digits as its factorization.

501611449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 501611449 is about 22396.6838840039. The cubic root of 501611449 is about 794.5522835418.

The spelling of 501611449 in words is "five hundred one million, six hundred eleven thousand, four hundred forty-nine".