53165261 has 2 divisors, whose sum is σ = 53165262. Its totient is φ = 53165260.

The previous prime is 53165209. The next prime is 53165269. The reversal of 53165261 is 16256135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29214025 + 23951236 = 5405^2 + 4894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53165261 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53165269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26582630 + 26582631.

It is an arithmetic number, because the mean of its divisors is an integer number (26582631).

Almost surely, 2^53165261 is an apocalyptic number.

It is an amenable number.

53165261 is a deficient number, since it is larger than the sum of its proper divisors (1).

53165261 is an equidigital number, since it uses as much as digits as its factorization.

53165261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 29.

The square root of 53165261 is about 7291.4512272935. The cubic root of 53165261 is about 376.0185901666.

The spelling of 53165261 in words is "fifty-three million, one hundred sixty-five thousand, two hundred sixty-one".