75448943 has 4 divisors (see below), whose sum is σ = 79419960. Its totient is φ = 71477928.

The previous prime is 75448921. The next prime is 75448969. The reversal of 75448943 is 34984457.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34984457 = 137 ⋅255361.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75448943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75448894 and 75448903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75448913) 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, 1985480 + ... + 1985517.

It is an arithmetic number, because the mean of its divisors is an integer number (19854990).

Almost surely, 2^75448943 is an apocalyptic number.

75448943 is a deficient number, since it is larger than the sum of its proper divisors (3971017).

75448943 is a wasteful number, since it uses less digits than its factorization.

75448943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971016.

The product of its digits is 483840, while the sum is 44.

The square root of 75448943 is about 8686.1351014131. The cubic root of 75448943 is about 422.5561107976.

The spelling of 75448943 in words is "seventy-five million, four hundred forty-eight thousand, nine hundred forty-three".