53556289 has 2 divisors, whose sum is σ = 53556290. Its totient is φ = 53556288.

The previous prime is 53556241. The next prime is 53556299. The reversal of 53556289 is 98265535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51365889 + 2190400 = 7167^2 + 1480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53556289 is a prime.

It is not a weakly prime, because it can be changed into another prime (53556229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26778144 + 26778145.

It is an arithmetic number, because the mean of its divisors is an integer number (26778145).

Almost surely, 2^53556289 is an apocalyptic number.

It is an amenable number.

53556289 is a deficient number, since it is larger than the sum of its proper divisors (1).

53556289 is an equidigital number, since it uses as much as digits as its factorization.

53556289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 43.

The square root of 53556289 is about 7318.2162444137. The cubic root of 53556289 is about 376.9382056241.

The spelling of 53556289 in words is "fifty-three million, five hundred fifty-six thousand, two hundred eighty-nine".