1445211522 has 12 divisors (see below), whose sum is σ = 3131291670. Its totient is φ = 481737168.

The previous prime is 1445211479. The next prime is 1445211539. The reversal of 1445211522 is 2251125441.

It is a happy number.

1445211522 is a `hidden beast` number, since 1 + 445 + 211 + 5 + 2 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 917544681 + 527666841 = 30291^2 + 22971^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40144747 + ... + 40144782.

Almost surely, 2^1445211522 is an apocalyptic number.

1445211522 is an abundant number, since it is smaller than the sum of its proper divisors (1686080148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445211522 is a wasteful number, since it uses less digits than its factorization.

1445211522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80289537 (or 80289534 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1445211522 is about 38015.9377366914. The cubic root of 1445211522 is about 1130.6038806334.

Adding to 1445211522 its reverse (2251125441), we get a palindrome (3696336963).

The spelling of 1445211522 in words is "one billion, four hundred forty-five million, two hundred eleven thousand, five hundred twenty-two".