251216002 has 16 divisors (see below), whose sum is σ = 389491200. Its totient is φ = 121396320.

The previous prime is 251215973. The next prime is 251216027. The reversal of 251216002 is 200612152.

It is a super-3 number, since 3×251216002³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54774 + ... + 59182.

It is an arithmetic number, because the mean of its divisors is an integer number (24343200).

Almost surely, 2^251216002 is an apocalyptic number.

251216002 is a deficient number, since it is larger than the sum of its proper divisors (138275198).

251216002 is a wasteful number, since it uses less digits than its factorization.

251216002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 251216002 is about 15849.7950144473. The cubic root of 251216002 is about 630.9802510891.

Adding to 251216002 its reverse (200612152), we get a palindrome (451828154).

The spelling of 251216002 in words is "two hundred fifty-one million, two hundred sixteen thousand, two".