501043481 has 2 divisors, whose sum is σ = 501043482. Its totient is φ = 501043480.

The previous prime is 501043463. The next prime is 501043489. The reversal of 501043481 is 184340105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501043456 + 25 = 22384^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 501043481 - 2¹⁰ = 501042457 is a prime.

It is a super-2 number, since 2×501043481² = 502089139705194722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 501043481.

It is not a weakly prime, because it can be changed into another prime (501043489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250521740 + 250521741.

It is an arithmetic number, because the mean of its divisors is an integer number (250521741).

Almost surely, 2^501043481 is an apocalyptic number.

It is an amenable number.

501043481 is a deficient number, since it is larger than the sum of its proper divisors (1).

501043481 is an equidigital number, since it uses as much as digits as its factorization.

501043481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 501043481 is about 22384.0005584346. Note that the first 3 decimals coincide. The cubic root of 501043481 is about 794.2522832755.

Adding to 501043481 its reverse (184340105), we get a palindrome (685383586).

The spelling of 501043481 in words is "five hundred one million, forty-three thousand, four hundred eighty-one".