75146345 has 4 divisors (see below), whose sum is σ = 90175620. Its totient is φ = 60117072.

The previous prime is 75146339. The next prime is 75146381. The reversal of 75146345 is 54364157.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9665881 + 65480464 = 3109^2 + 8092^2 .

It is a cyclic number.

It is not a de Polignac number, because 75146345 - 2²² = 70952041 is a prime.

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, 7514630 + ... + 7514639.

It is an arithmetic number, because the mean of its divisors is an integer number (22543905).

Almost surely, 2^75146345 is an apocalyptic number.

It is an amenable number.

75146345 is a deficient number, since it is larger than the sum of its proper divisors (15029275).

75146345 is a wasteful number, since it uses less digits than its factorization.

75146345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15029274.

The product of its digits is 50400, while the sum is 35.

The square root of 75146345 is about 8668.6991526987. The cubic root of 75146345 is about 421.9904481116.

The spelling of 75146345 in words is "seventy-five million, one hundred forty-six thousand, three hundred forty-five".