745249 has 2 divisors, whose sum is σ = 745250. Its totient is φ = 745248.

The previous prime is 745247. The next prime is 745273. The reversal of 745249 is 942547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431649 + 313600 = 657^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 745249 - 2¹ = 745247 is a prime.

Together with 745247, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 745249.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372624 + 372625.

It is an arithmetic number, because the mean of its divisors is an integer number (372625).

2⁷⁴⁵²⁴⁹ is an apocalyptic number.

It is an amenable number.

745249 is a deficient number, since it is larger than the sum of its proper divisors (1).

745249 is an equidigital number, since it uses as much as digits as its factorization.

745249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 745249 is about 863.2780548583. The cubic root of 745249 is about 90.6637755590.

The spelling of 745249 in words is "seven hundred forty-five thousand, two hundred forty-nine".