97445515 has 4 divisors (see below), whose sum is σ = 116934624. Its totient is φ = 77956408.

The previous prime is 97445489. The next prime is 97445563. The reversal of 97445515 is 51554479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51554479 = 241 ⋅213919.

It is a cyclic number.

It is not a de Polignac number, because 97445515 - 2¹³ = 97437323 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 Duffinian 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, 9744547 + ... + 9744556.

It is an arithmetic number, because the mean of its divisors is an integer number (29233656).

Almost surely, 2^97445515 is an apocalyptic number.

97445515 is a deficient number, since it is larger than the sum of its proper divisors (19489109).

97445515 is a wasteful number, since it uses less digits than its factorization.

97445515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19489108.

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

The square root of 97445515 is about 9871.4494882970. The cubic root of 97445515 is about 460.1724542423.

The spelling of 97445515 in words is "ninety-seven million, four hundred forty-five thousand, five hundred fifteen".