97491375 has 48 divisors (see below), whose sum is σ = 185034720. Its totient is φ = 49248000.

The previous prime is 97491343. The next prime is 97491389. The reversal of 97491375 is 57319479.

97491375 is a `hidden beast` number, since 97 + 491 + 3 + 75 = 666.

It is not a de Polignac number, because 97491375 - 2⁵ = 97491343 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 97491375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19095 + ... + 23655.

It is an arithmetic number, because the mean of its divisors is an integer number (3854890).

Almost surely, 2^97491375 is an apocalyptic number.

97491375 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

97491375 is a deficient number, since it is larger than the sum of its proper divisors (87543345).

97491375 is a wasteful number, since it uses less digits than its factorization.

97491375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4601 (or 4588 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 97491375 is about 9873.7720755545. The cubic root of 97491375 is about 460.2446320093.

The spelling of 97491375 in words is "ninety-seven million, four hundred ninety-one thousand, three hundred seventy-five".