2151505315 has 4 divisors (see below), whose sum is σ = 2581806384. Its totient is φ = 1721204248.

The previous prime is 2151505277. The next prime is 2151505351. The reversal of 2151505315 is 5135051512.

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 2151505315 - 2¹¹ = 2151503267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215150527 + ... + 215150536.

It is an arithmetic number, because the mean of its divisors is an integer number (645451596).

Almost surely, 2^2151505315 is an apocalyptic number.

2151505315 is a deficient number, since it is larger than the sum of its proper divisors (430301069).

2151505315 is an equidigital number, since it uses as much as digits as its factorization.

2151505315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430301068.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 2151505315 is about 46384.3218663376. The cubic root of 2151505315 is about 1290.9640281071.

Adding to 2151505315 its reverse (5135051512), we get a palindrome (7286556827).

The spelling of 2151505315 in words is "two billion, one hundred fifty-one million, five hundred five thousand, three hundred fifteen".