897557 has 2 divisors, whose sum is σ = 897558. Its totient is φ = 897556.

The previous prime is 897553. The next prime is 897563. The reversal of 897557 is 755798.

It is a happy number.

897557 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., 538756 + 358801 = 734^2 + 599^2 .

It is a cyclic number.

It is not a de Polignac number, because 897557 - 2² = 897553 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448778 + 448779.

It is an arithmetic number, because the mean of its divisors is an integer number (448779).

2⁸⁹⁷⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

897557 is a deficient number, since it is larger than the sum of its proper divisors (1).

897557 is an equidigital number, since it uses as much as digits as its factorization.

897557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 41.

The square root of 897557 is about 947.3948490466. The cubic root of 897557 is about 96.4615003876.

The spelling of 897557 in words is "eight hundred ninety-seven thousand, five hundred fifty-seven".