97136481 has 8 divisors (see below), whose sum is σ = 139478080. Its totient is φ = 59776272.

The previous prime is 97136471. The next prime is 97136489. The reversal of 97136481 is 18463179.

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

It is not a de Polignac number, because 97136481 - 2⁷ = 97136353 is a prime.

It is a super-2 number, since 2×97136481² = 18870991882126722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2490679 = 97136481 / (9 + 7 + 1 + 3 + 6 + 4 + 8 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97136489) 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, 1245301 + ... + 1245378.

It is an arithmetic number, because the mean of its divisors is an integer number (17434760).

Almost surely, 2^97136481 is an apocalyptic number.

It is an amenable number.

97136481 is a deficient number, since it is larger than the sum of its proper divisors (42341599).

97136481 is a wasteful number, since it uses less digits than its factorization.

97136481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490695.

The product of its digits is 36288, while the sum is 39.

The square root of 97136481 is about 9855.7841392758. The cubic root of 97136481 is about 459.6854828609.

The spelling of 97136481 in words is "ninety-seven million, one hundred thirty-six thousand, four hundred eighty-one".