97297581 has 8 divisors (see below), whose sum is σ = 134203680. Its totient is φ = 62628272.

The previous prime is 97297553. The next prime is 97297583. The reversal of 97297581 is 18579279.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97297581 - 2⁶ = 97297517 is a prime.

It is a super-2 number, since 2×97297581² = 18933638536903122, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 97297581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97297583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559095 + ... + 559268.

It is an arithmetic number, because the mean of its divisors is an integer number (16775460).

Almost surely, 2^97297581 is an apocalyptic number.

It is an amenable number.

97297581 is a deficient number, since it is larger than the sum of its proper divisors (36906099).

97297581 is a wasteful number, since it uses less digits than its factorization.

97297581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118395.

The product of its digits is 317520, while the sum is 48.

The square root of 97297581 is about 9863.9536191124. The cubic root of 97297581 is about 459.9394706115.

The spelling of 97297581 in words is "ninety-seven million, two hundred ninety-seven thousand, five hundred eighty-one".