505612287 has 48 divisors (see below), whose sum is σ = 816990720. Its totient is φ = 311428800.

The previous prime is 505612267. The next prime is 505612297. The reversal of 505612287 is 782216505.

It is a happy number.

It is not a de Polignac number, because 505612287 - 2⁶ = 505612223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505612207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187962 + ... + 190632.

It is an arithmetic number, because the mean of its divisors is an integer number (17020640).

Almost surely, 2^505612287 is an apocalyptic number.

505612287 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

505612287 is a deficient number, since it is larger than the sum of its proper divisors (311378433).

505612287 is a wasteful number, since it uses less digits than its factorization.

505612287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746 (or 2734 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 505612287 is about 22485.8241343296. The cubic root of 505612287 is about 796.6591338336.

The spelling of 505612287 in words is "five hundred five million, six hundred twelve thousand, two hundred eighty-seven".