505087249 has 2 divisors, whose sum is σ = 505087250. Its totient is φ = 505087248.

The previous prime is 505087243. The next prime is 505087267. The reversal of 505087249 is 942780505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 497067025 + 8020224 = 22295^2 + 2832^2 .

It is a cyclic number.

It is not a de Polignac number, because 505087249 - 2⁵ = 505087217 is a prime.

It is a super-2 number, since 2×505087249² = 510226258204776002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (505087243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252543624 + 252543625.

It is an arithmetic number, because the mean of its divisors is an integer number (252543625).

Almost surely, 2^505087249 is an apocalyptic number.

It is an amenable number.

505087249 is a deficient number, since it is larger than the sum of its proper divisors (1).

505087249 is an equidigital number, since it uses as much as digits as its factorization.

505087249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 505087249 is about 22474.1462351743. The cubic root of 505087249 is about 796.3832826891.

The spelling of 505087249 in words is "five hundred five million, eighty-seven thousand, two hundred forty-nine".