997859522 has 16 divisors (see below), whose sum is σ = 1633696992. Its totient is φ = 453340320.

The previous prime is 997859477. The next prime is 997859543. The reversal of 997859522 is 225958799.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36833 + ... + 57899.

It is an arithmetic number, because the mean of its divisors is an integer number (102106062).

Almost surely, 2^997859522 is an apocalyptic number.

997859522 is a deficient number, since it is larger than the sum of its proper divisors (635837470).

997859522 is a wasteful number, since it uses less digits than its factorization.

997859522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23233.

The product of its digits is 4082400, while the sum is 56.

The square root of 997859522 is about 31588.9145429215. The cubic root of 997859522 is about 999.2859976553.

The spelling of 997859522 in words is "nine hundred ninety-seven million, eight hundred fifty-nine thousand, five hundred twenty-two".