97875491 has 6 divisors (see below), whose sum is σ = 113855220. Its totient is φ = 83893236.

The previous prime is 97875473. The next prime is 97875497. The reversal of 97875491 is 19457879.

It is not a de Polignac number, because 97875491 - 2¹⁴ = 97859107 is a prime.

It is a super-4 number, since 4×97875491⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97875497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 998681 + ... + 998778.

It is an arithmetic number, because the mean of its divisors is an integer number (18975870).

Almost surely, 2^97875491 is an apocalyptic number.

97875491 is a deficient number, since it is larger than the sum of its proper divisors (15979729).

97875491 is a wasteful number, since it uses less digits than its factorization.

97875491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997473 (or 1997466 counting only the distinct ones).

The product of its digits is 635040, while the sum is 50.

The square root of 97875491 is about 9893.2042837495. The cubic root of 97875491 is about 460.8482944812.

The spelling of 97875491 in words is "ninety-seven million, eight hundred seventy-five thousand, four hundred ninety-one".