75442489 has 2 divisors, whose sum is σ = 75442490. Its totient is φ = 75442488.

The previous prime is 75442463. The next prime is 75442531. The reversal of 75442489 is 98424457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51265600 + 24176889 = 7160^2 + 4917^2 .

It is a cyclic number.

It is not a de Polignac number, because 75442489 - 2¹³ = 75434297 is a prime.

It is not a weakly prime, because it can be changed into another prime (75442459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37721244 + 37721245.

It is an arithmetic number, because the mean of its divisors is an integer number (37721245).

Almost surely, 2^75442489 is an apocalyptic number.

It is an amenable number.

75442489 is a deficient number, since it is larger than the sum of its proper divisors (1).

75442489 is an equidigital number, since it uses as much as digits as its factorization.

75442489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 43.

The square root of 75442489 is about 8685.7635818620. The cubic root of 75442489 is about 422.5440617889.

The spelling of 75442489 in words is "seventy-five million, four hundred forty-two thousand, four hundred eighty-nine".