53736409 has 2 divisors, whose sum is σ = 53736410. Its totient is φ = 53736408.

The previous prime is 53736407. The next prime is 53736413. The reversal of 53736409 is 90463735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48260809 + 5475600 = 6947^2 + 2340^2 .

It is a cyclic number.

It is not a de Polignac number, because 53736409 - 2¹ = 53736407 is a prime.

Together with 53736407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53736401) 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, 26868204 + 26868205.

It is an arithmetic number, because the mean of its divisors is an integer number (26868205).

Almost surely, 2^53736409 is an apocalyptic number.

It is an amenable number.

53736409 is a deficient number, since it is larger than the sum of its proper divisors (1).

53736409 is an equidigital number, since it uses as much as digits as its factorization.

53736409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 53736409 is about 7330.5121922005. The cubic root of 53736409 is about 377.3603044361.

It can be divided in two parts, 53736 and 409, that added together give a palindrome (54145).

The spelling of 53736409 in words is "fifty-three million, seven hundred thirty-six thousand, four hundred nine".