2516315651 has 4 divisors (see below), whose sum is σ = 2516959704. Its totient is φ = 2515671600.

The previous prime is 2516315629. The next prime is 2516315671. The reversal of 2516315651 is 1565136152.

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

It is a cyclic number.

It is not a de Polignac number, because 2516315651 - 2¹⁴ = 2516299267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2516315671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316130 + ... + 323991.

It is an arithmetic number, because the mean of its divisors is an integer number (629239926).

Almost surely, 2^2516315651 is an apocalyptic number.

2516315651 is a deficient number, since it is larger than the sum of its proper divisors (644053).

2516315651 is an equidigital number, since it uses as much as digits as its factorization.

2516315651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644052.

The product of its digits is 27000, while the sum is 35.

The square root of 2516315651 is about 50162.8911746522. The cubic root of 2516315651 is about 1360.1549079244.

The spelling of 2516315651 in words is "two billion, five hundred sixteen million, three hundred fifteen thousand, six hundred fifty-one".