51120110549 has 2 divisors, whose sum is σ = 51120110550. Its totient is φ = 51120110548.

The previous prime is 51120110507. The next prime is 51120110633. The reversal of 51120110549 is 94501102115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29719346449 + 21400764100 = 172393^2 + 146290^2 .

It is a cyclic number.

It is not a de Polignac number, because 51120110549 - 2²⁸ = 50851675093 is a prime.

It is a super-2 number, since 2×51120110549² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51120110849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25560055274 + 25560055275.

It is an arithmetic number, because the mean of its divisors is an integer number (25560055275).

Almost surely, 2^51120110549 is an apocalyptic number.

It is an amenable number.

51120110549 is a deficient number, since it is larger than the sum of its proper divisors (1).

51120110549 is an equidigital number, since it uses as much as digits as its factorization.

51120110549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 29.

The spelling of 51120110549 in words is "fifty-one billion, one hundred twenty million, one hundred ten thousand, five hundred forty-nine".