75148943 has 2 divisors, whose sum is σ = 75148944. Its totient is φ = 75148942.

The previous prime is 75148939. The next prime is 75148973. The reversal of 75148943 is 34984157.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75148943 - 2² = 75148939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75148943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75148973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37574471 + 37574472.

It is an arithmetic number, because the mean of its divisors is an integer number (37574472).

Almost surely, 2^75148943 is an apocalyptic number.

75148943 is a deficient number, since it is larger than the sum of its proper divisors (1).

75148943 is an equidigital number, since it uses as much as digits as its factorization.

75148943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 75148943 is about 8668.8490008766. The cubic root of 75148943 is about 421.9953111494.

It can be divided in two parts, 751 and 48943, that added together give a palindrome (49694).

The spelling of 75148943 in words is "seventy-five million, one hundred forty-eight thousand, nine hundred forty-three".