97091 has 4 divisors (see below), whose sum is σ = 98400. Its totient is φ = 95784.

The previous prime is 97081. The next prime is 97103. The reversal of 97091 is 19079.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97091.

It is not an unprimeable number, because it can be changed into a prime (97001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536 + ... + 693.

It is an arithmetic number, because the mean of its divisors is an integer number (24600).

2⁹⁷⁰⁹¹ is an apocalyptic number.

97091 is a deficient number, since it is larger than the sum of its proper divisors (1309).

97091 is a wasteful number, since it uses less digits than its factorization.

97091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 97091 is about 311.5942874958. The cubic root of 97091 is about 45.9613727399.

The spelling of 97091 in words is "ninety-seven thousand, ninety-one".