97990201 has 9 divisors (see below), whose sum is σ = 103617903.
Its totient is φ = 92654640.
The previous prime is 97990177. The next prime is 97990219. The reversal of 97990201 is 10209979.
The square root of 97990201 is 9899.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 28100601 + 69889600 = 5301^2 + 8360^2
It is not a de Polignac number, because 97990201 - 27 = 97990073 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (97990241) by changing a digit.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 187821 + ... + 188341.
Almost surely, 297990201 is an apocalyptic number.
97990201 is the 9899-th square number.
97990201 is the 4950-th centered octagonal number.
It is an amenable number.
97990201 is a deficient number, since it is larger than the sum of its proper divisors (5627702).
97990201 is an frugal number, since it uses more digits than its factorization.
97990201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1080 (or 540 counting only the distinct ones).
The product of its (nonzero) digits is 10206, while the sum is 37.
The cubic root of 97990201 is about 461.0282621409.
The spelling of 97990201 in words is "ninety-seven million, nine hundred ninety thousand, two hundred one".