1545000 has 80 divisors (see below), whose sum is σ = 4873440. Its totient is φ = 408000.

The previous prime is 1544987. The next prime is 1545001. The reversal of 1545000 is 5451.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1545001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14949 + ... + 15051.

It is an arithmetic number, because the mean of its divisors is an integer number (60918).

2^1545000 is an apocalyptic number.

1545000 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 1545000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2436720).

1545000 is an abundant number, since it is smaller than the sum of its proper divisors (3328440).

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

1545000 is a wasteful number, since it uses less digits than its factorization.

1545000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 1545000 is about 1242.9802894656. The cubic root of 1545000 is about 115.6048784075.

The spelling of 1545000 in words is "one million, five hundred forty-five thousand".