1251516002 has 8 divisors (see below), whose sum is σ = 2047935312. Its totient is φ = 568870900.

The previous prime is 1251516001. The next prime is 1251516011. The reversal of 1251516002 is 2006151521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1251516001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28443524 + ... + 28443567.

It is an arithmetic number, because the mean of its divisors is an integer number (255991914).

Almost surely, 2^1251516002 is an apocalyptic number.

1251516002 is a deficient number, since it is larger than the sum of its proper divisors (796419310).

1251516002 is a wasteful number, since it uses less digits than its factorization.

1251516002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56887104.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1251516002 is about 35376.7720686894. The cubic root of 1251516002 is about 1077.6526527226.

Adding to 1251516002 its reverse (2006151521), we get a palindrome (3257667523).

The spelling of 1251516002 in words is "one billion, two hundred fifty-one million, five hundred sixteen thousand, two".