1445220530 has 32 divisors (see below), whose sum is σ = 2821694400. Its totient is φ = 529774272.

The previous prime is 1445220529. The next prime is 1445220559. The reversal of 1445220530 is 350225441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445220530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21920 + ... + 58059.

It is an arithmetic number, because the mean of its divisors is an integer number (88177950).

Almost surely, 2^1445220530 is an apocalyptic number.

1445220530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1445220530 is a deficient number, since it is larger than the sum of its proper divisors (1376473870).

1445220530 is a wasteful number, since it uses less digits than its factorization.

1445220530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80138.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1445220530 is about 38016.0562131318. The cubic root of 1445220530 is about 1130.6062296456.

Adding to 1445220530 its reverse (350225441), we get a palindrome (1795445971).

The spelling of 1445220530 in words is "one billion, four hundred forty-five million, two hundred twenty thousand, five hundred thirty".