51110531401 has 2 divisors, whose sum is σ = 51110531402. Its totient is φ = 51110531400.

The previous prime is 51110531371. The next prime is 51110531419. The reversal of 51110531401 is 10413501115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42539475001 + 8571056400 = 206251^2 + 92580^2 .

It is a cyclic number.

It is not a de Polignac number, because 51110531401 - 2⁷ = 51110531273 is a prime.

It is a super-2 number, since 2×51110531401² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51110531431) 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 as a sum of consecutive naturals, namely, 25555265700 + 25555265701.

It is an arithmetic number, because the mean of its divisors is an integer number (25555265701).

Almost surely, 2^51110531401 is an apocalyptic number.

It is an amenable number.

51110531401 is a deficient number, since it is larger than the sum of its proper divisors (1).

51110531401 is an equidigital number, since it uses as much as digits as its factorization.

51110531401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 22.

The spelling of 51110531401 in words is "fifty-one billion, one hundred ten million, five hundred thirty-one thousand, four hundred one".