1445553 has 16 divisors (see below), whose sum is σ = 2200960. Its totient is φ = 937008.

The previous prime is 1445533. The next prime is 1445557. The reversal of 1445553 is 3555441.

It is not a de Polignac number, because 1445553 - 2¹⁰ = 1444529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445557) 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, 276 + ... + 1722.

It is an arithmetic number, because the mean of its divisors is an integer number (137560).

2^1445553 is an apocalyptic number.

It is an amenable number.

1445553 is a deficient number, since it is larger than the sum of its proper divisors (755407).

1445553 is a wasteful number, since it uses less digits than its factorization.

1445553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493 (or 1487 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 1445553 is about 1202.3115236909. The cubic root of 1445553 is about 113.0692920875.

The spelling of 1445553 in words is "one million, four hundred forty-five thousand, five hundred fifty-three".