51505050515 has 16 divisors (see below), whose sum is σ = 62544862368. Its totient is φ = 40714430976.

The previous prime is 51505050503. The next prime is 51505050521.

51505050515 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 51505050515 - 2¹⁸ = 51504788371 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41654 + ... + 323643.

It is an arithmetic number, because the mean of its divisors is an integer number (3909053898).

Almost surely, 2^51505050515 is an apocalyptic number.

51505050515 is a deficient number, since it is larger than the sum of its proper divisors (11039811853).

51505050515 is a wasteful number, since it uses less digits than its factorization.

51505050515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365638.

The product of its (nonzero) digits is 15625, while the sum is 32.

It can be divided in two parts, 515050 and 50515, that added together give a palindrome (565565).

The spelling of 51505050515 in words is "fifty-one billion, five hundred five million, fifty thousand, five hundred fifteen".