505288087 has 2 divisors, whose sum is σ = 505288088. Its totient is φ = 505288086.

The previous prime is 505288079. The next prime is 505288103. The reversal of 505288087 is 780882505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505288087 - 2³ = 505288079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505283087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252644043 + 252644044.

It is an arithmetic number, because the mean of its divisors is an integer number (252644044).

Almost surely, 2^505288087 is an apocalyptic number.

505288087 is a deficient number, since it is larger than the sum of its proper divisors (1).

505288087 is an equidigital number, since it uses as much as digits as its factorization.

505288087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179200, while the sum is 43.

The square root of 505288087 is about 22478.6139919702. The cubic root of 505288087 is about 796.4888240791.

It can be divided in two parts, 5052 and 88087, that added together give a palindrome (93139).

The spelling of 505288087 in words is "five hundred five million, two hundred eighty-eight thousand, eighty-seven".