97947725 has 6 divisors (see below), whose sum is σ = 121455210. Its totient is φ = 78358160.

The previous prime is 97947721. The next prime is 97947737. The reversal of 97947725 is 52774979.

It can be written as a sum of positive squares in 3 ways, for example, as 550564 + 97397161 = 742^2 + 9869^2 .

It is not a de Polignac number, because 97947725 - 2² = 97947721 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97947721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1958930 + ... + 1958979.

It is an arithmetic number, because the mean of its divisors is an integer number (20242535).

Almost surely, 2^97947725 is an apocalyptic number.

It is an amenable number.

97947725 is a deficient number, since it is larger than the sum of its proper divisors (23507485).

97947725 is a wasteful number, since it uses less digits than its factorization.

97947725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917919 (or 3917914 counting only the distinct ones).

The product of its digits is 1111320, while the sum is 50.

The square root of 97947725 is about 9896.8542982101. The cubic root of 97947725 is about 460.9616382456.

The spelling of 97947725 in words is "ninety-seven million, nine hundred forty-seven thousand, seven hundred twenty-five".