97145289 has 12 divisors (see below), whose sum is σ = 144847872. Its totient is φ = 62674200.

The previous prime is 97145263. The next prime is 97145291. The reversal of 97145289 is 98254179.

It is not a de Polignac number, because 97145289 - 2¹² = 97141193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97145189) 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 11 ways as a sum of consecutive naturals, for example, 173817 + ... + 174374.

It is an arithmetic number, because the mean of its divisors is an integer number (12070656).

Almost surely, 2^97145289 is an apocalyptic number.

It is an amenable number.

97145289 is a deficient number, since it is larger than the sum of its proper divisors (47702583).

97145289 is a wasteful number, since it uses less digits than its factorization.

97145289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348228 (or 348225 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 97145289 is about 9856.2309733488. The cubic root of 97145289 is about 459.6993766706.

The spelling of 97145289 in words is "ninety-seven million, one hundred forty-five thousand, two hundred eighty-nine".