53665349 has 2 divisors, whose sum is σ = 53665350. Its totient is φ = 53665348.

The previous prime is 53665343. The next prime is 53665373. The reversal of 53665349 is 94356635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53553124 + 112225 = 7318^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 53665349 - 2²⁴ = 36888133 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 (53665343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26832674 + 26832675.

It is an arithmetic number, because the mean of its divisors is an integer number (26832675).

Almost surely, 2^53665349 is an apocalyptic number.

It is an amenable number.

53665349 is a deficient number, since it is larger than the sum of its proper divisors (1).

53665349 is an equidigital number, since it uses as much as digits as its factorization.

53665349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 41.

The square root of 53665349 is about 7325.6637241959. The cubic root of 53665349 is about 377.1938930439.

The spelling of 53665349 in words is "fifty-three million, six hundred sixty-five thousand, three hundred forty-nine".