51055211363957 has 2 divisors, whose sum is σ = 51055211363958. Its totient is φ = 51055211363956.

The previous prime is 51055211363951. The next prime is 51055211364193. The reversal of 51055211363957 is 75936311255015.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47889181880401 + 3166029483556 = 6920201^2 + 1779334^2 .

It is a cyclic number.

It is not a de Polignac number, because 51055211363957 - 2²⁰ = 51055210315381 is a prime.

It is a super-3 number, since 3×51055211363957³ (a number of 42 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51055211363899 and 51055211363908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51055211363951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25527605681978 + 25527605681979.

It is an arithmetic number, because the mean of its divisors is an integer number (25527605681979).

Almost surely, 2^{51055211363957} is an apocalyptic number.

It is an amenable number.

51055211363957 is a deficient number, since it is larger than the sum of its proper divisors (1).

51055211363957 is an equidigital number, since it uses as much as digits as its factorization.

51055211363957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4252500, while the sum is 53.

The spelling of 51055211363957 in words is "fifty-one trillion, fifty-five billion, two hundred eleven million, three hundred sixty-three thousand, nine hundred fifty-seven".