75445448 has 16 divisors (see below), whose sum is σ = 152341980. Its totient is φ = 34820928.

The previous prime is 75445441. The next prime is 75445459. The reversal of 75445448 is 84454457.

It can be written as a sum of positive squares in 2 ways, for example, as 68591524 + 6853924 = 8282^2 + 2618^2 .

It is not an unprimeable number, because it can be changed into a prime (75445441) 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, 362615 + ... + 362822.

Almost surely, 2^75445448 is an apocalyptic number.

It is an amenable number.

75445448 is an abundant number, since it is smaller than the sum of its proper divisors (76896532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75445448 is a wasteful number, since it uses less digits than its factorization.

75445448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725456 (or 725452 counting only the distinct ones).

The product of its digits is 358400, while the sum is 41.

The square root of 75445448 is about 8685.9339163961. The cubic root of 75445448 is about 422.5495860479.

Subtracting 75445448 from its reverse (84454457), we obtain a palindrome (9009009).

The spelling of 75445448 in words is "seventy-five million, four hundred forty-five thousand, four hundred forty-eight".