97530975 has 18 divisors (see below), whose sum is σ = 174689216. Its totient is φ = 52016400.

The previous prime is 97530947. The next prime is 97531037. The reversal of 97530975 is 57903579.

It is a happy number.

It is not a de Polignac number, because 97530975 - 2⁹ = 97530463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97530975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 216511 + ... + 216960.

Almost surely, 2^97530975 is an apocalyptic number.

97530975 is a deficient number, since it is larger than the sum of its proper divisors (77158241).

97530975 is a wasteful number, since it uses less digits than its factorization.

97530975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433487 (or 433479 counting only the distinct ones).

The product of its (nonzero) digits is 297675, while the sum is 45.

The square root of 97530975 is about 9875.7771846068. Note that the first 3 decimals coincide. The cubic root of 97530975 is about 460.3069391289.

The spelling of 97530975 in words is "ninety-seven million, five hundred thirty thousand, nine hundred seventy-five".