53129147 has 2 divisors, whose sum is σ = 53129148. Its totient is φ = 53129146.

The previous prime is 53129143. The next prime is 53129171. The reversal of 53129147 is 74192135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53129147 - 2² = 53129143 is a prime.

It is not a weakly prime, because it can be changed into another prime (53129143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26564573 + 26564574.

It is an arithmetic number, because the mean of its divisors is an integer number (26564574).

Almost surely, 2^53129147 is an apocalyptic number.

53129147 is a deficient number, since it is larger than the sum of its proper divisors (1).

53129147 is an equidigital number, since it uses as much as digits as its factorization.

53129147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 53129147 is about 7288.9743448581. The cubic root of 53129147 is about 375.9334304775.

The spelling of 53129147 in words is "fifty-three million, one hundred twenty-nine thousand, one hundred forty-seven".