872505287 has 2 divisors, whose sum is σ = 872505288. Its totient is φ = 872505286.

The previous prime is 872505269. The next prime is 872505311. The reversal of 872505287 is 782505278.

872505287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 872505287 - 2⁸ = 872505031 is a prime.

It is a super-2 number, since 2×872505287² = 1522530951685904738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872505247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436252643 + 436252644.

It is an arithmetic number, because the mean of its divisors is an integer number (436252644).

Almost surely, 2^872505287 is an apocalyptic number.

872505287 is a deficient number, since it is larger than the sum of its proper divisors (1).

872505287 is an equidigital number, since it uses as much as digits as its factorization.

872505287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 872505287 is about 29538.2004699000. The cubic root of 872505287 is about 955.5557329402. Note that the first 3 decimals are identical.

Subtracting from 872505287 its reverse (782505278), we obtain a palindrome (90000009).

The spelling of 872505287 in words is "eight hundred seventy-two million, five hundred five thousand, two hundred eighty-seven".