97957581 has 8 divisors (see below), whose sum is σ = 130669440. Its totient is φ = 65275392.

The previous prime is 97957579. The next prime is 97957631. The reversal of 97957581 is 18575979.

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

It is not a de Polignac number, because 97957581 - 2¹ = 97957579 is a prime.

It is a super-2 number, since 2×97957581² = 19191375350743122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97957501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996 + ... + 14138.

It is an arithmetic number, because the mean of its divisors is an integer number (16333680).

Almost surely, 2^97957581 is an apocalyptic number.

It is an amenable number.

97957581 is a deficient number, since it is larger than the sum of its proper divisors (32711859).

97957581 is a wasteful number, since it uses less digits than its factorization.

97957581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14835.

The product of its digits is 793800, while the sum is 51.

The square root of 97957581 is about 9897.3522216803. The cubic root of 97957581 is about 460.9770991646.

The spelling of 97957581 in words is "ninety-seven million, nine hundred fifty-seven thousand, five hundred eighty-one".