75313445 has 4 divisors (see below), whose sum is σ = 90376140. Its totient is φ = 60250752.

The previous prime is 75313439. The next prime is 75313457. The reversal of 75313445 is 54431357.

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 37540129 + 37773316 = 6127^2 + 6146^2 .

It is a cyclic number.

It is not a de Polignac number, because 75313445 - 2⁴ = 75313429 is a prime.

It is a super-2 number, since 2×75313445² = 11344229995536050, which contains 22 as substring.

It is a congruent number.

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, 7531340 + ... + 7531349.

It is an arithmetic number, because the mean of its divisors is an integer number (22594035).

Almost surely, 2^75313445 is an apocalyptic number.

It is an amenable number.

75313445 is a deficient number, since it is larger than the sum of its proper divisors (15062695).

75313445 is a wasteful number, since it uses less digits than its factorization.

75313445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15062694.

The product of its digits is 25200, while the sum is 32.

The square root of 75313445 is about 8678.3319249727. The cubic root of 75313445 is about 422.3030044596.

The spelling of 75313445 in words is "seventy-five million, three hundred thirteen thousand, four hundred forty-five".