1445222523 has 32 divisors (see below), whose sum is σ = 1992165120. Its totient is φ = 931582080.

The previous prime is 1445222521. The next prime is 1445222563. The reversal of 1445222523 is 3252225441.

It is not a de Polignac number, because 1445222523 - 2¹ = 1445222521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1445222521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3640161 + ... + 3640557.

It is an arithmetic number, because the mean of its divisors is an integer number (62255160).

Almost surely, 2^1445222523 is an apocalyptic number.

1445222523 is a deficient number, since it is larger than the sum of its proper divisors (546942597).

1445222523 is a wasteful number, since it uses less digits than its factorization.

1445222523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747.

The product of its digits is 19200, while the sum is 30.

The square root of 1445222523 is about 38016.0824257313. The cubic root of 1445222523 is about 1130.6067493580.

Adding to 1445222523 its reverse (3252225441), we get a palindrome (4697447964).

The spelling of 1445222523 in words is "one billion, four hundred forty-five million, two hundred twenty-two thousand, five hundred twenty-three".