1531541 has 16 divisors (see below), whose sum is σ = 1772928. Its totient is φ = 1310400.

The previous prime is 1531499. The next prime is 1531549. The reversal of 1531541 is 1451351.

It is a cyclic number.

It is not a de Polignac number, because 1531541 - 2⁶ = 1531477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21536 + ... + 21606.

It is an arithmetic number, because the mean of its divisors is an integer number (110808).

2^1531541 is an apocalyptic number.

1531541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1531541 is a deficient number, since it is larger than the sum of its proper divisors (241387).

1531541 is a wasteful number, since it uses less digits than its factorization.

1531541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172.

The product of its digits is 300, while the sum is 20.

The square root of 1531541 is about 1237.5544432468. The cubic root of 1531541 is about 115.2682082646.

Adding to 1531541 its reverse (1451351), we get a palindrome (2982892).

The spelling of 1531541 in words is "one million, five hundred thirty-one thousand, five hundred forty-one".