1445614221 has 16 divisors (see below), whose sum is σ = 2029847040. Its totient is φ = 912607920.

The previous prime is 1445614211. The next prime is 1445614279. The reversal of 1445614221 is 1224165441.

It is a de Polignac number, because none of the positive numbers 2^k-1445614221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445614211) 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, 167416 + ... + 175838.

It is an arithmetic number, because the mean of its divisors is an integer number (126865440).

Almost surely, 2^1445614221 is an apocalyptic number.

It is an amenable number.

1445614221 is a deficient number, since it is larger than the sum of its proper divisors (584232819).

1445614221 is a wasteful number, since it uses less digits than its factorization.

1445614221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11456.

The product of its digits is 7680, while the sum is 30.

The square root of 1445614221 is about 38021.2338174342. The cubic root of 1445614221 is about 1130.7088827417.

Adding to 1445614221 its reverse (1224165441), we get a palindrome (2669779662).

The spelling of 1445614221 in words is "one billion, four hundred forty-five million, six hundred fourteen thousand, two hundred twenty-one".