75448481 has 2 divisors, whose sum is σ = 75448482. Its totient is φ = 75448480.

The previous prime is 75448469. The next prime is 75448507. The reversal of 75448481 is 18484457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65869456 + 9579025 = 8116^2 + 3095^2 .

It is a cyclic number.

It is not a de Polignac number, because 75448481 - 2¹⁸ = 75186337 is a prime.

It is a super-2 number, since 2×75448481² = 11384946570414722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75448421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37724240 + 37724241.

It is an arithmetic number, because the mean of its divisors is an integer number (37724241).

Almost surely, 2^75448481 is an apocalyptic number.

It is an amenable number.

75448481 is a deficient number, since it is larger than the sum of its proper divisors (1).

75448481 is an equidigital number, since it uses as much as digits as its factorization.

75448481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 143360, while the sum is 41.

The square root of 75448481 is about 8686.1085072661. The cubic root of 75448481 is about 422.5552483101. Note that the first 3 decimals are identical.

The spelling of 75448481 in words is "seventy-five million, four hundred forty-eight thousand, four hundred eighty-one".