1531006 has 4 divisors (see below), whose sum is σ = 2296512. Its totient is φ = 765502.

The previous prime is 1530967. The next prime is 1531021. The reversal of 1531006 is 6001351.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382750 + ... + 382753.

It is an arithmetic number, because the mean of its divisors is an integer number (574128).

2^1531006 is an apocalyptic number.

1531006 is a deficient number, since it is larger than the sum of its proper divisors (765506).

1531006 is an equidigital number, since it uses as much as digits as its factorization.

1531006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765505.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1531006 is about 1237.3382722603. The cubic root of 1531006 is about 115.2547848187.

Adding to 1531006 its reverse (6001351), we get a palindrome (7532357).

The spelling of 1531006 in words is "one million, five hundred thirty-one thousand, six".