651312115 has 16 divisors (see below), whose sum is σ = 824670720. Its totient is φ = 492449760.

The previous prime is 651312097. The next prime is 651312163. The reversal of 651312115 is 511213156.

It is a happy number.

It is not a de Polignac number, because 651312115 - 2⁹ = 651311603 is a prime.

It is a super-2 number, since 2×651312115² = 848414942291546450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 651312115.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32992 + ... + 48898.

It is an arithmetic number, because the mean of its divisors is an integer number (51541920).

Almost surely, 2^651312115 is an apocalyptic number.

651312115 is a deficient number, since it is larger than the sum of its proper divisors (173358605).

651312115 is a wasteful number, since it uses less digits than its factorization.

651312115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16362.

The product of its digits is 900, while the sum is 25.

The square root of 651312115 is about 25520.8172870698. The cubic root of 651312115 is about 866.8215881008.

The spelling of 651312115 in words is "six hundred fifty-one million, three hundred twelve thousand, one hundred fifteen".