897269531 has 2 divisors, whose sum is σ = 897269532. Its totient is φ = 897269530.

The previous prime is 897269501. The next prime is 897269551. The reversal of 897269531 is 135962798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 897269531 - 2¹⁰ = 897268507 is a prime.

It is a super-2 number, since 2×897269531² = 1610185222521919922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 897269531.

It is not a weakly prime, because it can be changed into another prime (897269501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448634765 + 448634766.

It is an arithmetic number, because the mean of its divisors is an integer number (448634766).

Almost surely, 2^897269531 is an apocalyptic number.

897269531 is a deficient number, since it is larger than the sum of its proper divisors (1).

897269531 is an equidigital number, since it uses as much as digits as its factorization.

897269531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 50.

The square root of 897269531 is about 29954.4576148526. The cubic root of 897269531 is about 964.5120107814.

The spelling of 897269531 in words is "eight hundred ninety-seven million, two hundred sixty-nine thousand, five hundred thirty-one".