51011151173 has 2 divisors, whose sum is σ = 51011151174. Its totient is φ = 51011151172.

The previous prime is 51011151101. The next prime is 51011151199. The reversal of 51011151173 is 37115111015.

It is an a-pointer prime, because the next prime (51011151199) can be obtained adding 51011151173 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26744677444 + 24266473729 = 163538^2 + 155777^2 .

It is a cyclic number.

It is not a de Polignac number, because 51011151173 - 2¹⁴ = 51011134789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51011151073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505575586 + 25505575587.

It is an arithmetic number, because the mean of its divisors is an integer number (25505575587).

Almost surely, 2^51011151173 is an apocalyptic number.

It is an amenable number.

51011151173 is a deficient number, since it is larger than the sum of its proper divisors (1).

51011151173 is an equidigital number, since it uses as much as digits as its factorization.

51011151173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 525, while the sum is 26.

Adding to 51011151173 its reverse (37115111015), we get a palindrome (88126262188).

The spelling of 51011151173 in words is "fifty-one billion, eleven million, one hundred fifty-one thousand, one hundred seventy-three".