1445500 has 72 divisors (see below), whose sum is σ = 3734640. Its totient is φ = 487200.

The previous prime is 1445497. The next prime is 1445503. The reversal of 1445500 is 55441.

It is an interprime number because it is at equal distance from previous prime (1445497) and next prime (1445503).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24471 + ... + 24529.

It is an arithmetic number, because the mean of its divisors is an integer number (51870).

2^1445500 is an apocalyptic number.

1445500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1445500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867320).

1445500 is an abundant number, since it is smaller than the sum of its proper divisors (2289140).

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

1445500 is a wasteful number, since it uses less digits than its factorization.

1445500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1445500 is about 1202.2894826122. The cubic root of 1445500 is about 113.0679102067.

It can be divided in two parts, 1445 and 500, that multiplied together give a square (722500 = 850²).

The spelling of 1445500 in words is "one million, four hundred forty-five thousand, five hundred".