75115397 has 8 divisors (see below), whose sum is σ = 86001600. Its totient is φ = 64268064.

The previous prime is 75115393. The next prime is 75115409. The reversal of 75115397 is 79351157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75115397 - 2² = 75115393 is a prime.

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 75115397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75115393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5447 + ... + 13412.

It is an arithmetic number, because the mean of its divisors is an integer number (10750200).

Almost surely, 2^75115397 is an apocalyptic number.

It is an amenable number.

75115397 is a deficient number, since it is larger than the sum of its proper divisors (10886203).

75115397 is a wasteful number, since it uses less digits than its factorization.

75115397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19435.

The product of its digits is 33075, while the sum is 38.

The square root of 75115397 is about 8666.9139259600. The cubic root of 75115397 is about 421.9325098152.

The spelling of 75115397 in words is "seventy-five million, one hundred fifteen thousand, three hundred ninety-seven".