97917137 has 4 divisors (see below), whose sum is σ = 101293620. Its totient is φ = 94540656.

The previous prime is 97917107. The next prime is 97917191. The reversal of 97917137 is 73171979.

It is a happy number.

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 66601921 + 31315216 = 8161^2 + 5596^2 .

It is a cyclic number.

It is not a de Polignac number, because 97917137 - 2⁶ = 97917073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97917107) 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, 1688198 + ... + 1688255.

It is an arithmetic number, because the mean of its divisors is an integer number (25323405).

Almost surely, 2^97917137 is an apocalyptic number.

It is an amenable number.

97917137 is a deficient number, since it is larger than the sum of its proper divisors (3376483).

97917137 is a wasteful number, since it uses less digits than its factorization.

97917137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376482.

The product of its digits is 83349, while the sum is 44.

The square root of 97917137 is about 9895.3088380303. The cubic root of 97917137 is about 460.9136488289.

The spelling of 97917137 in words is "ninety-seven million, nine hundred seventeen thousand, one hundred thirty-seven".