1445085517 has 4 divisors (see below), whose sum is σ = 1446077440. Its totient is φ = 1444093596.

The previous prime is 1445085511. The next prime is 1445085529. The reversal of 1445085517 is 7155805441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445085517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445085517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445085511) 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, 493773 + ... + 496690.

It is an arithmetic number, because the mean of its divisors is an integer number (361519360).

Almost surely, 2^1445085517 is an apocalyptic number.

It is an amenable number.

1445085517 is a deficient number, since it is larger than the sum of its proper divisors (991923).

1445085517 is an equidigital number, since it uses as much as digits as its factorization.

1445085517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991922.

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 1445085517 is about 38014.2804351207. The cubic root of 1445085517 is about 1130.5710213413.

The spelling of 1445085517 in words is "one billion, four hundred forty-five million, eighty-five thousand, five hundred seventeen".