897521842 has 8 divisors (see below), whose sum is σ = 1538608896. Its totient is φ = 384652212.

The previous prime is 897521813. The next prime is 897521861. The reversal of 897521842 is 248125798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 897521792 and 897521801.

It is an unprimeable number.

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, 32054338 + ... + 32054365.

It is an arithmetic number, because the mean of its divisors is an integer number (192326112).

Almost surely, 2^897521842 is an apocalyptic number.

897521842 is a deficient number, since it is larger than the sum of its proper divisors (641087054).

897521842 is a wasteful number, since it uses less digits than its factorization.

897521842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64108712.

The product of its digits is 322560, while the sum is 46.

The square root of 897521842 is about 29958.6688956636. The cubic root of 897521842 is about 964.6024088073.

The spelling of 897521842 in words is "eight hundred ninety-seven million, five hundred twenty-one thousand, eight hundred forty-two".