97207945 has 4 divisors (see below), whose sum is σ = 116649540. Its totient is φ = 77766352.

The previous prime is 97207927. The next prime is 97207949. The reversal of 97207945 is 54970279.

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

It can be written as a sum of positive squares in 2 ways, for example, as 54331641 + 42876304 = 7371^2 + 6548^2 .

It is a cyclic number.

It is not a de Polignac number, because 97207945 - 2¹⁷ = 97076873 is a prime.

It is a super-2 number, since 2×97207945² = 18898769142246050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97207949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9720790 + ... + 9720799.

It is an arithmetic number, because the mean of its divisors is an integer number (29162385).

Almost surely, 2^97207945 is an apocalyptic number.

It is an amenable number.

97207945 is a deficient number, since it is larger than the sum of its proper divisors (19441595).

97207945 is a wasteful number, since it uses less digits than its factorization.

97207945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19441594.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 97207945 is about 9859.4089579447. The cubic root of 97207945 is about 459.7981865196.

The spelling of 97207945 in words is "ninety-seven million, two hundred seven thousand, nine hundred forty-five".