1445527745 has 4 divisors (see below), whose sum is σ = 1734633300. Its totient is φ = 1156422192.

The previous prime is 1445527739. The next prime is 1445527757. The reversal of 1445527745 is 5477255441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 555639184 + 889888561 = 23572^2 + 29831^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445527745 - 2²⁴ = 1428750529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1445527696 and 1445527705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144552770 + ... + 144552779.

It is an arithmetic number, because the mean of its divisors is an integer number (433658325).

Almost surely, 2^1445527745 is an apocalyptic number.

It is an amenable number.

1445527745 is a deficient number, since it is larger than the sum of its proper divisors (289105555).

1445527745 is an equidigital number, since it uses as much as digits as its factorization.

1445527745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289105554.

The product of its digits is 784000, while the sum is 44.

The square root of 1445527745 is about 38020.0965937752. The cubic root of 1445527745 is about 1130.6863361246.

The spelling of 1445527745 in words is "one billion, four hundred forty-five million, five hundred twenty-seven thousand, seven hundred forty-five".