97755650281 has 9 divisors (see below), whose sum is σ = 99136259319. Its totient is φ = 96394020336.

The previous prime is 97755650269. The next prime is 97755650299. The reversal of 97755650281 is 18205655779.

The square root of 97755650281 is 312659.

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., 55490869225 + 42264781056 = 235565^2 + 205584^2 .

It is not a de Polignac number, because 97755650281 - 2²¹ = 97753553129 is a prime.

It is a super-2 number, since 2×97755650281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97755650221) 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, 22821966 + ... + 22826248.

Almost surely, 2^97755650281 is an apocalyptic number.

97755650281 is the 312659-th square number.

97755650281 is the 156330-th centered octagonal number.

It is an amenable number.

97755650281 is a deficient number, since it is larger than the sum of its proper divisors (1380609038).

97755650281 is an frugal number, since it uses more digits than its factorization.

97755650281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8712 (or 4356 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 97755650281 in words is "ninety-seven billion, seven hundred fifty-five million, six hundred fifty thousand, two hundred eighty-one".