504101861 has 2 divisors, whose sum is σ = 504101862. Its totient is φ = 504101860.

The previous prime is 504101849. The next prime is 504101891. The reversal of 504101861 is 168101405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417425761 + 86676100 = 20431^2 + 9310^2 .

It is a cyclic number.

It is not a de Polignac number, because 504101861 - 2⁶ = 504101797 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 504101861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504101891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252050930 + 252050931.

It is an arithmetic number, because the mean of its divisors is an integer number (252050931).

Almost surely, 2^504101861 is an apocalyptic number.

It is an amenable number.

504101861 is a deficient number, since it is larger than the sum of its proper divisors (1).

504101861 is an equidigital number, since it uses as much as digits as its factorization.

504101861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 504101861 is about 22452.2128308102. The cubic root of 504101861 is about 795.8650505005.

The spelling of 504101861 in words is "five hundred four million, one hundred one thousand, eight hundred sixty-one".