755307493 has 2 divisors, whose sum is σ = 755307494. Its totient is φ = 755307492.

The previous prime is 755307491. The next prime is 755307503. The reversal of 755307493 is 394703557.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 751746724 + 3560769 = 27418^2 + 1887^2 .

It is an emirp because it is prime and its reverse (394703557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 755307493 - 2¹ = 755307491 is a prime.

Together with 755307491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (755307491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377653746 + 377653747.

It is an arithmetic number, because the mean of its divisors is an integer number (377653747).

Almost surely, 2^755307493 is an apocalyptic number.

It is an amenable number.

755307493 is a deficient number, since it is larger than the sum of its proper divisors (1).

755307493 is an equidigital number, since it uses as much as digits as its factorization.

755307493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 43.

The square root of 755307493 is about 27482.8581665008. The cubic root of 755307493 is about 910.6984506197.

The spelling of 755307493 in words is "seven hundred fifty-five million, three hundred seven thousand, four hundred ninety-three".