745531541 has 2 divisors, whose sum is σ = 745531542. Its totient is φ = 745531540.

The previous prime is 745531517. The next prime is 745531543. The reversal of 745531541 is 145135547.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478078225 + 267453316 = 21865^2 + 16354^2 .

It is a cyclic number.

It is not a de Polignac number, because 745531541 - 2⁶ = 745531477 is a prime.

Together with 745531543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745531543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372765770 + 372765771.

It is an arithmetic number, because the mean of its divisors is an integer number (372765771).

Almost surely, 2^745531541 is an apocalyptic number.

It is an amenable number.

745531541 is a deficient number, since it is larger than the sum of its proper divisors (1).

745531541 is an equidigital number, since it uses as much as digits as its factorization.

745531541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 35.

The square root of 745531541 is about 27304.4234694674. The cubic root of 745531541 is about 906.7523168407.

The spelling of 745531541 in words is "seven hundred forty-five million, five hundred thirty-one thousand, five hundred forty-one".