51023129 has 2 divisors, whose sum is σ = 51023130. Its totient is φ = 51023128.

The previous prime is 51023107. The next prime is 51023183. The reversal of 51023129 is 92132015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31663129 + 19360000 = 5627^2 + 4400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51023129 is a prime.

It is not a weakly prime, because it can be changed into another prime (51023429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25511564 + 25511565.

It is an arithmetic number, because the mean of its divisors is an integer number (25511565).

Almost surely, 2^51023129 is an apocalyptic number.

It is an amenable number.

51023129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51023129 is an equidigital number, since it uses as much as digits as its factorization.

51023129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 51023129 is about 7143.0475988894. The cubic root of 51023129 is about 370.8990287627.

The spelling of 51023129 in words is "fifty-one million, twenty-three thousand, one hundred twenty-nine".