51103211207 has 2 divisors, whose sum is σ = 51103211208. Its totient is φ = 51103211206.

The previous prime is 51103211161. The next prime is 51103211261. The reversal of 51103211207 is 70211230115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51103211207 - 2¹⁰ = 51103210183 is a prime.

It is a super-2 number, since 2×51103211207² (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 (51103211807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25551605603 + 25551605604.

It is an arithmetic number, because the mean of its divisors is an integer number (25551605604).

Almost surely, 2^51103211207 is an apocalyptic number.

51103211207 is a deficient number, since it is larger than the sum of its proper divisors (1).

51103211207 is an equidigital number, since it uses as much as digits as its factorization.

51103211207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 23.

The spelling of 51103211207 in words is "fifty-one billion, one hundred three million, two hundred eleven thousand, two hundred seven".