51022129 has 2 divisors, whose sum is σ = 51022130. Its totient is φ = 51022128.

The previous prime is 51022067. The next prime is 51022133. The reversal of 51022129 is 92122015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36276529 + 14745600 = 6023^2 + 3840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51022129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51022159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25511064 + 25511065.

It is an arithmetic number, because the mean of its divisors is an integer number (25511065).

Almost surely, 2^51022129 is an apocalyptic number.

It is an amenable number.

51022129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51022129 is an equidigital number, since it uses as much as digits as its factorization.

51022129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 51022129 is about 7142.9776004129. The cubic root of 51022129 is about 370.8966056691.

The spelling of 51022129 in words is "fifty-one million, twenty-two thousand, one hundred twenty-nine".