51515301241 has 16 divisors (see below), whose sum is σ = 54380851200. Its totient is φ = 48734442000.

The previous prime is 51515301239. The next prime is 51515301281. The reversal of 51515301241 is 14210351515.

It is a cyclic number.

It is not a de Polignac number, because 51515301241 - 2¹ = 51515301239 is a prime.

It is a super-2 number, since 2×51515301241² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51515301221) by changing a digit.

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, 248716 + ... + 406066.

It is an arithmetic number, because the mean of its divisors is an integer number (3398803200).

Almost surely, 2^51515301241 is an apocalyptic number.

It is an amenable number.

51515301241 is a deficient number, since it is larger than the sum of its proper divisors (2865549959).

51515301241 is a wasteful number, since it uses less digits than its factorization.

51515301241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157620.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 51515301241 its reverse (14210351515), we get a palindrome (65725652756).

The spelling of 51515301241 in words is "fifty-one billion, five hundred fifteen million, three hundred one thousand, two hundred forty-one".