51151129 has 2 divisors, whose sum is σ = 51151130. Its totient is φ = 51151128.

The previous prime is 51151127. The next prime is 51151153. The reversal of 51151129 is 92115115.

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., 51151104 + 25 = 7152^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 51151129 - 2¹ = 51151127 is a prime.

Together with 51151127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51151127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25575564 + 25575565.

It is an arithmetic number, because the mean of its divisors is an integer number (25575565).

Almost surely, 2^51151129 is an apocalyptic number.

It is an amenable number.

51151129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51151129 is an equidigital number, since it uses as much as digits as its factorization.

51151129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 25.

The square root of 51151129 is about 7152.0017477626. The cubic root of 51151129 is about 371.2089237204.

Subtracting from 51151129 its sum of digits (25), we obtain a square (51151104 = 7152²).

The spelling of 51151129 in words is "fifty-one million, one hundred fifty-one thousand, one hundred twenty-nine".