51013129 has 2 divisors, whose sum is σ = 51013130. Its totient is φ = 51013128.

The previous prime is 51013099. The next prime is 51013159. The reversal of 51013129 is 92131015.

It is a balanced prime because it is at equal distance from previous prime (51013099) and next prime (51013159).

It can be written as a sum of positive squares in only one way, i.e., 27510025 + 23503104 = 5245^2 + 4848^2 .

It is a cyclic number.

It is not a de Polignac number, because 51013129 - 2⁵ = 51013097 is a prime.

It is not a weakly prime, because it can be changed into another prime (51013159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25506564 + 25506565.

It is an arithmetic number, because the mean of its divisors is an integer number (25506565).

Almost surely, 2^51013129 is an apocalyptic number.

It is an amenable number.

51013129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51013129 is an equidigital number, since it uses as much as digits as its factorization.

51013129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 51013129 is about 7142.3475832530. The cubic root of 51013129 is about 370.8747964018.

The spelling of 51013129 in words is "fifty-one million, thirteen thousand, one hundred twenty-nine".