97515445 has 4 divisors (see below), whose sum is σ = 117018540. Its totient is φ = 78012352.

The previous prime is 97515437. The next prime is 97515499. The reversal of 97515445 is 54451579.

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 61826769 + 35688676 = 7863^2 + 5974^2 .

It is a cyclic number.

It is not a de Polignac number, because 97515445 - 2³ = 97515437 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 97515398 and 97515407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9751540 + ... + 9751549.

It is an arithmetic number, because the mean of its divisors is an integer number (29254635).

Almost surely, 2^97515445 is an apocalyptic number.

It is an amenable number.

97515445 is a deficient number, since it is larger than the sum of its proper divisors (19503095).

97515445 is a wasteful number, since it uses less digits than its factorization.

97515445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19503094.

The product of its digits is 126000, while the sum is 40.

The square root of 97515445 is about 9874.9908860717. The cubic root of 97515445 is about 460.2825060493.

The spelling of 97515445 in words is "ninety-seven million, five hundred fifteen thousand, four hundred forty-five".