1445540 has 12 divisors (see below), whose sum is σ = 3035676. Its totient is φ = 578208.

The previous prime is 1445533. The next prime is 1445557. The reversal of 1445540 is 455441.

It can be written as a sum of positive squares in 2 ways, for example, as 972196 + 473344 = 986^2 + 688^2 .

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, 36119 + ... + 36158.

It is an arithmetic number, because the mean of its divisors is an integer number (252973).

2^1445540 is an apocalyptic number.

1445540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445540 is an abundant number, since it is smaller than the sum of its proper divisors (1590136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445540 is a wasteful number, since it uses less digits than its factorization.

1445540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72286 (or 72284 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1445540 is about 1202.3061174260. The cubic root of 1445540 is about 113.0689531387.

Subtracting from 1445540 its reverse (455441), we obtain a palindrome (990099).

It can be divided in two parts, 14 and 45540, that added together give a palindrome (45554).

The spelling of 1445540 in words is "one million, four hundred forty-five thousand, five hundred forty".