51109529 has 2 divisors, whose sum is σ = 51109530. Its totient is φ = 51109528.

The previous prime is 51109523. The next prime is 51109537. The reversal of 51109529 is 92590115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51093904 + 15625 = 7148^2 + 125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51109529 is a prime.

It is a super-2 number, since 2×51109529² = 5224367909203682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51109495 and 51109504.

It is not a weakly prime, because it can be changed into another prime (51109523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25554764 + 25554765.

It is an arithmetic number, because the mean of its divisors is an integer number (25554765).

Almost surely, 2^51109529 is an apocalyptic number.

It is an amenable number.

51109529 is a deficient number, since it is larger than the sum of its proper divisors (1).

51109529 is an equidigital number, since it uses as much as digits as its factorization.

51109529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 51109529 is about 7149.0928795198. The cubic root of 51109529 is about 371.1082646232.

The spelling of 51109529 in words is "fifty-one million, one hundred nine thousand, five hundred twenty-nine".