51505023241 has 16 divisors (see below), whose sum is σ = 59468358400. Its totient is φ = 43693950528.

The previous prime is 51505023221. The next prime is 51505023257. The reversal of 51505023241 is 14232050515.

It is a cyclic number.

It is not a de Polignac number, because 51505023241 - 2¹⁷ = 51504892169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51505023221) 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 15 ways as a sum of consecutive naturals, for example, 664471 + ... + 737923.

It is an arithmetic number, because the mean of its divisors is an integer number (3716772400).

Almost surely, 2^51505023241 is an apocalyptic number.

It is an amenable number.

51505023241 is a deficient number, since it is larger than the sum of its proper divisors (7963335159).

51505023241 is a wasteful number, since it uses less digits than its factorization.

51505023241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74488.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 51505023241 its reverse (14232050515), we get a palindrome (65737073756).

The spelling of 51505023241 in words is "fifty-one billion, five hundred five million, twenty-three thousand, two hundred forty-one".