51545029 has 2 divisors, whose sum is σ = 51545030. Its totient is φ = 51545028.

The previous prime is 51545023. The next prime is 51545059. The reversal of 51545029 is 92054515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50908225 + 636804 = 7135^2 + 798^2 .

It is a cyclic number.

It is not a de Polignac number, because 51545029 - 2²¹ = 49447877 is a prime.

It is a super-2 number, since 2×51545029² = 5313780029221682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51545023) 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, 25772514 + 25772515.

It is an arithmetic number, because the mean of its divisors is an integer number (25772515).

Almost surely, 2^51545029 is an apocalyptic number.

It is an amenable number.

51545029 is a deficient number, since it is larger than the sum of its proper divisors (1).

51545029 is an equidigital number, since it uses as much as digits as its factorization.

51545029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 51545029 is about 7179.4866808150. The cubic root of 51545029 is about 372.1593456362.

The spelling of 51545029 in words is "fifty-one million, five hundred forty-five thousand, twenty-nine".