501040549 has 2 divisors, whose sum is σ = 501040550. Its totient is φ = 501040548.

The previous prime is 501040523. The next prime is 501040571. The reversal of 501040549 is 945040105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329168449 + 171872100 = 18143^2 + 13110^2 .

It is a cyclic number.

It is not a de Polignac number, because 501040549 - 2²¹ = 498943397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501041549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250520274 + 250520275.

It is an arithmetic number, because the mean of its divisors is an integer number (250520275).

Almost surely, 2^501040549 is an apocalyptic number.

It is an amenable number.

501040549 is a deficient number, since it is larger than the sum of its proper divisors (1).

501040549 is an equidigital number, since it uses as much as digits as its factorization.

501040549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 501040549 is about 22383.9350651310. The cubic root of 501040549 is about 794.2507340072.

The spelling of 501040549 in words is "five hundred one million, forty thousand, five hundred forty-nine".