97277945 has 4 divisors (see below), whose sum is σ = 116733540. Its totient is φ = 77822352.

The previous prime is 97277941. The next prime is 97277951. The reversal of 97277945 is 54977279.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17372224 + 79905721 = 4168^2 + 8939^2 .

It is a cyclic number.

It is not a de Polignac number, because 97277945 - 2² = 97277941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 97277893 and 97277902.

It is not an unprimeable number, because it can be changed into a prime (97277941) 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 3 ways as a sum of consecutive naturals, for example, 9727790 + ... + 9727799.

It is an arithmetic number, because the mean of its divisors is an integer number (29183385).

Almost surely, 2^97277945 is an apocalyptic number.

It is an amenable number.

97277945 is a deficient number, since it is larger than the sum of its proper divisors (19455595).

97277945 is a wasteful number, since it uses less digits than its factorization.

97277945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19455594.

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

The square root of 97277945 is about 9862.9582276313. The cubic root of 97277945 is about 459.9085278105.

The spelling of 97277945 in words is "ninety-seven million, two hundred seventy-seven thousand, nine hundred forty-five".