97296561 has 12 divisors (see below), whose sum is σ = 141830260. Its totient is φ = 64268640.

The previous prime is 97296547. The next prime is 97296571. The reversal of 97296561 is 16569279.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53934336 + 43362225 = 7344^2 + 6585^2 .

It is not a de Polignac number, because 97296561 - 2⁶ = 97296497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97296541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48610 + ... + 50571.

Almost surely, 2^97296561 is an apocalyptic number.

It is an amenable number.

97296561 is a deficient number, since it is larger than the sum of its proper divisors (44533699).

97296561 is a wasteful number, since it uses less digits than its factorization.

97296561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99296 (or 99293 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 97296561 is about 9863.9019155707. The cubic root of 97296561 is about 459.9378633776.

It can be divided in two parts, 9729 and 6561, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 97296561 in words is "ninety-seven million, two hundred ninety-six thousand, five hundred sixty-one".