504754981 has 2 divisors, whose sum is σ = 504754982. Its totient is φ = 504754980.

The previous prime is 504754951. The next prime is 504754997. The reversal of 504754981 is 189457405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335988900 + 168766081 = 18330^2 + 12991^2 .

It is a cyclic number.

It is not a de Polignac number, because 504754981 - 2²¹ = 502657829 is a prime.

It is a super-2 number, since 2×504754981² = 509555181688620722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504754951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252377490 + 252377491.

It is an arithmetic number, because the mean of its divisors is an integer number (252377491).

Almost surely, 2^504754981 is an apocalyptic number.

It is an amenable number.

504754981 is a deficient number, since it is larger than the sum of its proper divisors (1).

504754981 is an equidigital number, since it uses as much as digits as its factorization.

504754981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 504754981 is about 22466.7527916252. The cubic root of 504754981 is about 796.2086127175.

The spelling of 504754981 in words is "five hundred four million, seven hundred fifty-four thousand, nine hundred eighty-one".