75497489 has 2 divisors, whose sum is σ = 75497490. Its totient is φ = 75497488.

The previous prime is 75497483. The next prime is 75497491. The reversal of 75497489 is 98479457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 34023889 = 6440^2 + 5833^2 .

It is an emirp because it is prime and its reverse (98479457) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75497489 is a prime.

It is a Sophie Germain prime.

Together with 75497491, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 75497489.

It is not a weakly prime, because it can be changed into another prime (75497483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37748744 + 37748745.

It is an arithmetic number, because the mean of its divisors is an integer number (37748745).

Almost surely, 2^75497489 is an apocalyptic number.

It is an amenable number.

75497489 is a deficient number, since it is larger than the sum of its proper divisors (1).

75497489 is an equidigital number, since it uses as much as digits as its factorization.

75497489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The square root of 75497489 is about 8688.9291054767. The cubic root of 75497489 is about 422.6467195814.

The spelling of 75497489 in words is "seventy-five million, four hundred ninety-seven thousand, four hundred eighty-nine".