1531066 has 4 divisors (see below), whose sum is σ = 2296602. Its totient is φ = 765532.

The previous prime is 1531051. The next prime is 1531081. The reversal of 1531066 is 6601351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6601351 = 1087 ⋅6073.

It is an interprime number because it is at equal distance from previous prime (1531051) and next prime (1531081).

It can be written as a sum of positive squares in only one way, i.e., 1428025 + 103041 = 1195^2 + 321^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 382765 + ... + 382768.

2^1531066 is an apocalyptic number.

1531066 is a deficient number, since it is larger than the sum of its proper divisors (765536).

1531066 is an equidigital number, since it uses as much as digits as its factorization.

1531066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765535.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1531066 is about 1237.3625176156. The cubic root of 1531066 is about 115.2562904075.

It can be divided in two parts, 15310 and 66, that added together give a square (15376 = 124²).

The spelling of 1531066 in words is "one million, five hundred thirty-one thousand, sixty-six".