1331546 has 4 divisors (see below), whose sum is σ = 1997322. Its totient is φ = 665772.

The previous prime is 1331527. The next prime is 1331549. The reversal of 1331546 is 6451331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1297321 + 34225 = 1139^2 + 185^2 .

It is not an unprimeable number, because it can be changed into a prime (1331549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332885 + ... + 332888.

2^1331546 is an apocalyptic number.

1331546 is a deficient number, since it is larger than the sum of its proper divisors (665776).

1331546 is an equidigital number, since it uses as much as digits as its factorization.

1331546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665775.

The product of its digits is 1080, while the sum is 23.

The square root of 1331546 is about 1153.9263408034. The cubic root of 1331546 is about 110.0150392660.

Adding to 1331546 its reverse (6451331), we get a palindrome (7782877).

The spelling of 1331546 in words is "one million, three hundred thirty-one thousand, five hundred forty-six".