897574901 has 2 divisors, whose sum is σ = 897574902. Its totient is φ = 897574900.

The previous prime is 897574883. The next prime is 897574903. The reversal of 897574901 is 109475798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608608900 + 288966001 = 24670^2 + 16999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897574901 is a prime.

Together with 897574903, it forms a pair of twin primes.

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 897574901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897574903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448787450 + 448787451.

It is an arithmetic number, because the mean of its divisors is an integer number (448787451).

Almost surely, 2^897574901 is an apocalyptic number.

It is an amenable number.

897574901 is a deficient number, since it is larger than the sum of its proper divisors (1).

897574901 is an equidigital number, since it uses as much as digits as its factorization.

897574901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 897574901 is about 29959.5544192500. The cubic root of 897574901 is about 964.6214166384.

The spelling of 897574901 in words is "eight hundred ninety-seven million, five hundred seventy-four thousand, nine hundred one".