1445428522 has 4 divisors (see below), whose sum is σ = 2168142786. Its totient is φ = 722714260.

The previous prime is 1445428513. The next prime is 1445428547. The reversal of 1445428522 is 2258245441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2258245441 = 47521².

It can be written as a sum of positive squares in only one way, i.e., 935075241 + 510353281 = 30579^2 + 22591^2 .

It is a super-2 number, since 2×1445428522² = 4178527224422208968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361357129 + ... + 361357132.

Almost surely, 2^1445428522 is an apocalyptic number.

1445428522 is a deficient number, since it is larger than the sum of its proper divisors (722714264).

1445428522 is an equidigital number, since it uses as much as digits as its factorization.

1445428522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722714263.

The product of its digits is 102400, while the sum is 37.

The square root of 1445428522 is about 38018.7916956865. The cubic root of 1445428522 is about 1130.6604649142.

The spelling of 1445428522 in words is "one billion, four hundred forty-five million, four hundred twenty-eight thousand, five hundred twenty-two".