75127345 has 4 divisors (see below), whose sum is σ = 90152820. Its totient is φ = 60101872.

The previous prime is 75127333. The next prime is 75127357. The reversal of 75127345 is 54372157.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (75127333) and next prime (75127357).

It can be written as a sum of positive squares in 2 ways, for example, as 42876304 + 32251041 = 6548^2 + 5679^2 .

It is a cyclic number.

It is not a de Polignac number, because 75127345 - 2¹³ = 75119153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75127345.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7512730 + ... + 7512739.

It is an arithmetic number, because the mean of its divisors is an integer number (22538205).

Almost surely, 2^75127345 is an apocalyptic number.

It is an amenable number.

75127345 is a deficient number, since it is larger than the sum of its proper divisors (15025475).

75127345 is a wasteful number, since it uses less digits than its factorization.

75127345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15025474.

The product of its digits is 29400, while the sum is 34.

The square root of 75127345 is about 8667.6031865793. The cubic root of 75127345 is about 421.9548797622.

The spelling of 75127345 in words is "seventy-five million, one hundred twenty-seven thousand, three hundred forty-five".