897245291 has 4 divisors (see below), whose sum is σ = 899588352. Its totient is φ = 894902232.

The previous prime is 897245287. The next prime is 897245309. The reversal of 897245291 is 192542798.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 897245291 - 2² = 897245287 is a prime.

It is a super-2 number, since 2×897245291² = 1610098224443349362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (897245201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170956 + ... + 1171721.

It is an arithmetic number, because the mean of its divisors is an integer number (224897088).

Almost surely, 2^897245291 is an apocalyptic number.

897245291 is a deficient number, since it is larger than the sum of its proper divisors (2343061).

897245291 is a wasteful number, since it uses less digits than its factorization.

897245291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343060.

The product of its digits is 362880, while the sum is 47.

The square root of 897245291 is about 29954.0529978833. The cubic root of 897245291 is about 964.5033251781.

The spelling of 897245291 in words is "eight hundred ninety-seven million, two hundred forty-five thousand, two hundred ninety-one".