75444146 has 4 divisors (see below), whose sum is σ = 113166222. Its totient is φ = 37722072.

The previous prime is 75444139. The next prime is 75444151. The reversal of 75444146 is 64144457.

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

It can be written as a sum of positive squares in only one way, i.e., 69973225 + 5470921 = 8365^2 + 2339^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18861035 + ... + 18861038.

Almost surely, 2^75444146 is an apocalyptic number.

75444146 is a deficient number, since it is larger than the sum of its proper divisors (37722076).

75444146 is a wasteful number, since it uses less digits than its factorization.

75444146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37722075.

The product of its digits is 53760, while the sum is 35.

The square root of 75444146 is about 8685.8589673100. The cubic root of 75444146 is about 422.5471553171.

The spelling of 75444146 in words is "seventy-five million, four hundred forty-four thousand, one hundred forty-six".