504981887 has 2 divisors, whose sum is σ = 504981888. Its totient is φ = 504981886.

The previous prime is 504981853. The next prime is 504981907. The reversal of 504981887 is 788189405.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 504981887 - 2¹⁶ = 504916351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504981187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252490943 + 252490944.

It is an arithmetic number, because the mean of its divisors is an integer number (252490944).

Almost surely, 2^504981887 is an apocalyptic number.

504981887 is a deficient number, since it is larger than the sum of its proper divisors (1).

504981887 is an equidigital number, since it uses as much as digits as its factorization.

504981887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 504981887 is about 22471.8020416699. The cubic root of 504981887 is about 796.3279032336.

The spelling of 504981887 in words is "five hundred four million, nine hundred eighty-one thousand, eight hundred eighty-seven".