75272443 has 4 divisors (see below), whose sum is σ = 75771088. Its totient is φ = 74773800.

The previous prime is 75272437. The next prime is 75272453. The reversal of 75272443 is 34427257.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75272443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75272399 and 75272408.

It is not an unprimeable number, because it can be changed into a prime (75272453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249096 + ... + 249397.

It is an arithmetic number, because the mean of its divisors is an integer number (18942772).

Almost surely, 2^75272443 is an apocalyptic number.

75272443 is a deficient number, since it is larger than the sum of its proper divisors (498645).

75272443 is a wasteful number, since it uses less digits than its factorization.

75272443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498644.

The product of its digits is 47040, while the sum is 34.

The square root of 75272443 is about 8675.9692830254. The cubic root of 75272443 is about 422.2263540865.

The spelling of 75272443 in words is "seventy-five million, two hundred seventy-two thousand, four hundred forty-three".