75525997 has 8 divisors (see below), whose sum is σ = 78926400. Its totient is φ = 72135360.

The previous prime is 75525979. The next prime is 75526021. The reversal of 75525997 is 79952557.

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

It is a de Polignac number, because none of the positive numbers 2^k-75525997 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 75525997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75525937) 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, 16629 + ... + 20677.

It is an arithmetic number, because the mean of its divisors is an integer number (9865800).

Almost surely, 2^75525997 is an apocalyptic number.

It is an amenable number.

75525997 is a deficient number, since it is larger than the sum of its proper divisors (3400403).

75525997 is a wasteful number, since it uses less digits than its factorization.

75525997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4883.

The product of its digits is 992250, while the sum is 49.

The square root of 75525997 is about 8690.5694289845. The cubic root of 75525997 is about 422.6999102972.

The spelling of 75525997 in words is "seventy-five million, five hundred twenty-five thousand, nine hundred ninety-seven".