1545804 has 60 divisors (see below), whose sum is σ = 4363744. Its totient is φ = 474336.

The previous prime is 1545799. The next prime is 1545809. The reversal of 1545804 is 4085451.

It is an interprime number because it is at equal distance from previous prime (1545799) and next prime (1545809).

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

It is not an unprimeable number, because it can be changed into a prime (1545809) 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 19 ways as a sum of consecutive naturals, for example, 4029 + ... + 4395.

2^1545804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1545804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2181872).

1545804 is an abundant number, since it is smaller than the sum of its proper divisors (2817940).

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

1545804 is a wasteful number, since it uses less digits than its factorization.

1545804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1545804 is about 1243.3036636317. The cubic root of 1545804 is about 115.6249280740.

The spelling of 1545804 in words is "one million, five hundred forty-five thousand, eight hundred four".