97565281 has 16 divisors (see below), whose sum is σ = 109626048. Its totient is φ = 86060800.

The previous prime is 97565269. The next prime is 97565311. The reversal of 97565281 is 18256579.

It is a cyclic number.

It is not a de Polignac number, because 97565281 - 2⁵ = 97565249 is a prime.

It is a super-2 number, since 2×97565281² = 19037968113217922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97565201) 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 15 ways as a sum of consecutive naturals, for example, 101901 + ... + 102853.

It is an arithmetic number, because the mean of its divisors is an integer number (6851628).

Almost surely, 2^97565281 is an apocalyptic number.

It is an amenable number.

97565281 is a deficient number, since it is larger than the sum of its proper divisors (12060767).

97565281 is a wasteful number, since it uses less digits than its factorization.

97565281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232.

The product of its digits is 151200, while the sum is 43.

The square root of 97565281 is about 9877.5139078616. The cubic root of 97565281 is about 460.3609029721.

The spelling of 97565281 in words is "ninety-seven million, five hundred sixty-five thousand, two hundred eighty-one".