53947129 has 2 divisors, whose sum is σ = 53947130. Its totient is φ = 53947128.

The previous prime is 53947111. The next prime is 53947141. The reversal of 53947129 is 92174935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27321529 + 26625600 = 5227^2 + 5160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53947129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53947091 and 53947100.

It is not a weakly prime, because it can be changed into another prime (53942129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26973564 + 26973565.

It is an arithmetic number, because the mean of its divisors is an integer number (26973565).

Almost surely, 2^53947129 is an apocalyptic number.

It is an amenable number.

53947129 is a deficient number, since it is larger than the sum of its proper divisors (1).

53947129 is an equidigital number, since it uses as much as digits as its factorization.

53947129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 53947129 is about 7344.8709314732. The cubic root of 53947129 is about 377.8529167502.

The spelling of 53947129 in words is "fifty-three million, nine hundred forty-seven thousand, one hundred twenty-nine".