1543536 has 60 divisors (see below), whose sum is σ = 4491032. Its totient is φ = 513216.

The previous prime is 1543513. The next prime is 1543537. The reversal of 1543536 is 6353451.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543537) 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 11 ways as a sum of consecutive naturals, for example, 3690 + ... + 4086.

2^1543536 is an apocalyptic number.

1543536 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 1543536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2245516).

1543536 is an abundant number, since it is smaller than the sum of its proper divisors (2947496).

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

1543536 is an equidigital number, since it uses as much as digits as its factorization.

1543536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 402 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 1543536 is about 1242.3912427251. The cubic root of 1543536 is about 115.5683521879.

Adding to 1543536 its reverse (6353451), we get a palindrome (7896987).

The spelling of 1543536 in words is "one million, five hundred forty-three thousand, five hundred thirty-six".