51105542207 has 2 divisors, whose sum is σ = 51105542208. Its totient is φ = 51105542206.

The previous prime is 51105542197. The next prime is 51105542209. The reversal of 51105542207 is 70224550115.

51105542207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51105542207 - 2⁶ = 51105542143 is a prime.

It is a super-2 number, since 2×51105542207² (a number of 22 digits) contains 22 as substring.

Together with 51105542209, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51105542209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25552771103 + 25552771104.

It is an arithmetic number, because the mean of its divisors is an integer number (25552771104).

Almost surely, 2^51105542207 is an apocalyptic number.

51105542207 is a deficient number, since it is larger than the sum of its proper divisors (1).

51105542207 is an equidigital number, since it uses as much as digits as its factorization.

51105542207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 32.

The spelling of 51105542207 in words is "fifty-one billion, one hundred five million, five hundred forty-two thousand, two hundred seven".