51110505235553 has 2 divisors, whose sum is σ = 51110505235554. Its totient is φ = 51110505235552.

The previous prime is 51110505235523. The next prime is 51110505235597. The reversal of 51110505235553 is 35553250501115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43465235995489 + 7645269240064 = 6592817^2 + 2765008^2 .

It is a cyclic number.

It is not a de Polignac number, because 51110505235553 - 2⁸ = 51110505235297 is a prime.

It is a super-2 number, since 2×51110505235553² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51110505235553.

It is not a weakly prime, because it can be changed into another prime (51110505235523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555252617776 + 25555252617777.

It is an arithmetic number, because the mean of its divisors is an integer number (25555252617777).

Almost surely, 2^{51110505235553} is an apocalyptic number.

It is an amenable number.

51110505235553 is a deficient number, since it is larger than the sum of its proper divisors (1).

51110505235553 is an equidigital number, since it uses as much as digits as its factorization.

51110505235553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 281250, while the sum is 41.

Adding to 51110505235553 its reverse (35553250501115), we get a palindrome (86663755736668).

The spelling of 51110505235553 in words is "fifty-one trillion, one hundred ten billion, five hundred five million, two hundred thirty-five thousand, five hundred fifty-three".