51601129 has 2 divisors, whose sum is σ = 51601130. Its totient is φ = 51601128.

The previous prime is 51601117. The next prime is 51601153. The reversal of 51601129 is 92110615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32661225 + 18939904 = 5715^2 + 4352^2 .

It is a cyclic number.

It is not a de Polignac number, because 51601129 - 2⁵ = 51601097 is a prime.

It is not a weakly prime, because it can be changed into another prime (51641129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25800564 + 25800565.

It is an arithmetic number, because the mean of its divisors is an integer number (25800565).

Almost surely, 2^51601129 is an apocalyptic number.

It is an amenable number.

51601129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51601129 is an equidigital number, since it uses as much as digits as its factorization.

51601129 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 25.

The square root of 51601129 is about 7183.3925828956. The cubic root of 51601129 is about 372.2943122204.

The spelling of 51601129 in words is "fifty-one million, six hundred one thousand, one hundred twenty-nine".