97481961 has 20 divisors (see below), whose sum is σ = 154189332. Its totient is φ = 61164288.

The previous prime is 97481957. The next prime is 97482001. The reversal of 97481961 is 16918479.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 33177600 + 64304361 = 5760^2 + 8019^2 .

It is not a de Polignac number, because 97481961 - 2² = 97481957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97481921) 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 19 ways as a sum of consecutive naturals, for example, 34020 + ... + 36773.

Almost surely, 2^97481961 is an apocalyptic number.

It is an amenable number.

97481961 is a deficient number, since it is larger than the sum of its proper divisors (56707371).

97481961 is a wasteful number, since it uses less digits than its factorization.

97481961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70822 (or 70813 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 97481961 is about 9873.2953465396. The cubic root of 97481961 is about 460.2298174255.

The spelling of 97481961 in words is "ninety-seven million, four hundred eighty-one thousand, nine hundred sixty-one".