872257 has 2 divisors, whose sum is σ = 872258. Its totient is φ = 872256.

The previous prime is 872251. The next prime is 872269. The reversal of 872257 is 752278.

872257 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 can be written as a sum of positive squares in only one way, i.e., 863041 + 9216 = 929^2 + 96^2 .

It is a cyclic number.

It is not a de Polignac number, because 872257 - 2⁷ = 872129 is a prime.

It is a d-powerful number, because it can be written as 8⁵ + 7² + 2⁴ + 2⁸ + 5⁶ + 7⁷ .

It is not a weakly prime, because it can be changed into another prime (872251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436128 + 436129.

It is an arithmetic number, because the mean of its divisors is an integer number (436129).

2⁸⁷²²⁵⁷ is an apocalyptic number.

It is an amenable number.

872257 is a deficient number, since it is larger than the sum of its proper divisors (1).

872257 is an equidigital number, since it uses as much as digits as its factorization.

872257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 31.

The square root of 872257 is about 933.9470006376. The cubic root of 872257 is about 95.5465084177.

The spelling of 872257 in words is "eight hundred seventy-two thousand, two hundred fifty-seven".