51214003105261 has 4 divisors (see below), whose sum is σ = 51226147762812. Its totient is φ = 51201858447712.

The previous prime is 51214003105249. The next prime is 51214003105273. The reversal of 51214003105261 is 16250130041215.

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

It is an interprime number because it is at equal distance from previous prime (51214003105249) and next prime (51214003105273).

It can be written as a sum of positive squares in 2 ways, for example, as 31079443111236 + 20134559994025 = 5574894^2 + 4487155^2 .

It is a cyclic number.

It is not a de Polignac number, because 51214003105261 - 2¹⁹ = 51214002580973 is a prime.

It is a super-2 number, since 2×51214003105261² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51214003105241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6072322450 + ... + 6072330883.

It is an arithmetic number, because the mean of its divisors is an integer number (12806536940703).

Almost surely, 2^{51214003105261} is an apocalyptic number.

It is an amenable number.

51214003105261 is a deficient number, since it is larger than the sum of its proper divisors (12144657551).

51214003105261 is a wasteful number, since it uses less digits than its factorization.

51214003105261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12144657550.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 51214003105261 its reverse (16250130041215), we get a palindrome (67464133146476).

The spelling of 51214003105261 in words is "fifty-one trillion, two hundred fourteen billion, three million, one hundred five thousand, two hundred sixty-one".