897296551 has 4 divisors (see below), whose sum is σ = 906008272. Its totient is φ = 888584832.

The previous prime is 897296531. The next prime is 897296557. The reversal of 897296551 is 155692798.

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 897296551 - 2¹⁹ = 896772263 is a prime.

It is a super-2 number, since 2×897296551² = 1610282200872991202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897296557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4355706 + ... + 4355911.

It is an arithmetic number, because the mean of its divisors is an integer number (226502068).

Almost surely, 2^897296551 is an apocalyptic number.

897296551 is a deficient number, since it is larger than the sum of its proper divisors (8711721).

897296551 is a wasteful number, since it uses less digits than its factorization.

897296551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8711720.

The product of its digits is 1360800, while the sum is 52.

The square root of 897296551 is about 29954.9086294717. The cubic root of 897296551 is about 964.5216923216.

The spelling of 897296551 in words is "eight hundred ninety-seven million, two hundred ninety-six thousand, five hundred fifty-one".