1445221052 has 12 divisors (see below), whose sum is σ = 2759058456. Its totient is φ = 656918640.

The previous prime is 1445221039. The next prime is 1445221097. The reversal of 1445221052 is 2501225441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16422923 + ... + 16423010.

It is an arithmetic number, because the mean of its divisors is an integer number (229921538).

Almost surely, 2^1445221052 is an apocalyptic number.

It is an amenable number.

1445221052 is a deficient number, since it is larger than the sum of its proper divisors (1313837404).

1445221052 is a wasteful number, since it uses less digits than its factorization.

1445221052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32845948 (or 32845946 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1445221052 is about 38016.0630786514. The cubic root of 1445221052 is about 1130.6063657670.

Adding to 1445221052 its reverse (2501225441), we get a palindrome (3946446493).

The spelling of 1445221052 in words is "one billion, four hundred forty-five million, two hundred twenty-one thousand, fifty-two".