745028453 has 4 divisors (see below), whose sum is σ = 802338348. Its totient is φ = 687718560.

The previous prime is 745028423. The next prime is 745028477. The reversal of 745028453 is 354820547.

It is a happy number.

745028453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354820547 = 137 ⋅2589931.

It can be written as a sum of positive squares in 2 ways, for example, as 489604129 + 255424324 = 22127^2 + 15982^2 .

It is a cyclic number.

It is not a de Polignac number, because 745028453 - 2²⁰ = 743979877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745028423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28654928 + ... + 28654953.

It is an arithmetic number, because the mean of its divisors is an integer number (200584587).

Almost surely, 2^745028453 is an apocalyptic number.

It is an amenable number.

745028453 is a deficient number, since it is larger than the sum of its proper divisors (57309895).

745028453 is a wasteful number, since it uses less digits than its factorization.

745028453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57309894.

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 745028453 is about 27295.2093415676. The cubic root of 745028453 is about 906.5483107802.

The spelling of 745028453 in words is "seven hundred forty-five million, twenty-eight thousand, four hundred fifty-three".