1251332006 has 4 divisors (see below), whose sum is σ = 1876998012. Its totient is φ = 625666002.

The previous prime is 1251331993. The next prime is 1251332011. The reversal of 1251332006 is 6002331521.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312833000 + ... + 312833003.

It is an arithmetic number, because the mean of its divisors is an integer number (469249503).

Almost surely, 2^1251332006 is an apocalyptic number.

1251332006 is a deficient number, since it is larger than the sum of its proper divisors (625666006).

1251332006 is an equidigital number, since it uses as much as digits as its factorization.

1251332006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625666005.

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

The square root of 1251332006 is about 35374.1714531945. The cubic root of 1251332006 is about 1077.5998385103.

Adding to 1251332006 its reverse (6002331521), we get a palindrome (7253663527).

The spelling of 1251332006 in words is "one billion, two hundred fifty-one million, three hundred thirty-two thousand, six".