75745487 has 2 divisors, whose sum is σ = 75745488. Its totient is φ = 75745486.

The previous prime is 75745471. The next prime is 75745513. The reversal of 75745487 is 78454757.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (78454757) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75745487 - 2⁴ = 75745471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75745447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37872743 + 37872744.

It is an arithmetic number, because the mean of its divisors is an integer number (37872744).

Almost surely, 2^75745487 is an apocalyptic number.

75745487 is a deficient number, since it is larger than the sum of its proper divisors (1).

75745487 is an equidigital number, since it uses as much as digits as its factorization.

75745487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1097600, while the sum is 47.

The square root of 75745487 is about 8703.1883238271. The cubic root of 75745487 is about 423.1089909484.

The spelling of 75745487 in words is "seventy-five million, seven hundred forty-five thousand, four hundred eighty-seven".