1545216 has 44 divisors (see below), whose sum is σ = 4126752. Its totient is φ = 514048.

The previous prime is 1545179. The next prime is 1545217. The reversal of 1545216 is 6125451.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2821 + ... + 3323.

2^1545216 is an apocalyptic number.

1545216 is a gapful number since it is divisible by the number (16) 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 1545216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2063376).

1545216 is an abundant number, since it is smaller than the sum of its proper divisors (2581536).

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

1545216 is an equidigital number, since it uses as much as digits as its factorization.

1545216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 508 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 1545216 is about 1243.0671743715. The cubic root of 1545216 is about 115.6102655683.

The spelling of 1545216 in words is "one million, five hundred forty-five thousand, two hundred sixteen".