1445555145 has 16 divisors (see below), whose sum is σ = 2316676032. Its totient is φ = 769700160.

The previous prime is 1445555143. The next prime is 1445555149. The reversal of 1445555145 is 5415555441.

It is not a de Polignac number, because 1445555145 - 2¹ = 1445555143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1445555143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69411 + ... + 87800.

It is an arithmetic number, because the mean of its divisors is an integer number (144792252).

Almost surely, 2^1445555145 is an apocalyptic number.

1445555145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1445555145 is a deficient number, since it is larger than the sum of its proper divisors (871120887).

1445555145 is a wasteful number, since it uses less digits than its factorization.

1445555145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157832.

The product of its digits is 200000, while the sum is 39.

The square root of 1445555145 is about 38020.4569278172. The cubic root of 1445555145 is about 1130.6934801383.

The spelling of 1445555145 in words is "one billion, four hundred forty-five million, five hundred fifty-five thousand, one hundred forty-five".