501765049 has 2 divisors, whose sum is σ = 501765050. Its totient is φ = 501765048.

The previous prime is 501765037. The next prime is 501765073. The reversal of 501765049 is 940567105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 496621225 + 5143824 = 22285^2 + 2268^2 .

It is a cyclic number.

It is not a de Polignac number, because 501765049 - 2²³ = 493376441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 501764999 and 501765017.

It is not a weakly prime, because it can be changed into another prime (501735049) 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, 250882524 + 250882525.

It is an arithmetic number, because the mean of its divisors is an integer number (250882525).

Almost surely, 2^501765049 is an apocalyptic number.

It is an amenable number.

501765049 is a deficient number, since it is larger than the sum of its proper divisors (1).

501765049 is an equidigital number, since it uses as much as digits as its factorization.

501765049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 501765049 is about 22400.1127006093. The cubic root of 501765049 is about 794.6333760394.

It can be divided in two parts, 50176 and 5049, that added together give a square (55225 = 235²).

The spelling of 501765049 in words is "five hundred one million, seven hundred sixty-five thousand, forty-nine".