1445453553 has 4 divisors (see below), whose sum is σ = 1927271408. Its totient is φ = 963635700.

The previous prime is 1445453533. The next prime is 1445453563. The reversal of 1445453553 is 3553545441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3553545441 = 3 ⋅1184515147.

It is not a de Polignac number, because 1445453553 - 2⁸ = 1445453297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445453533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240908923 + ... + 240908928.

It is an arithmetic number, because the mean of its divisors is an integer number (481817852).

Almost surely, 2^1445453553 is an apocalyptic number.

It is an amenable number.

1445453553 is a deficient number, since it is larger than the sum of its proper divisors (481817855).

1445453553 is an equidigital number, since it uses as much as digits as its factorization.

1445453553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481817854.

The product of its digits is 360000, while the sum is 39.

The square root of 1445453553 is about 38019.1208867328. The cubic root of 1445453553 is about 1130.6669915597. Note that the first 3 decimals are identical.

Adding to 1445453553 its reverse (3553545441), we get a palindrome (4998998994).

The spelling of 1445453553 in words is "one billion, four hundred forty-five million, four hundred fifty-three thousand, five hundred fifty-three".