53075509 has 2 divisors, whose sum is σ = 53075510. Its totient is φ = 53075508.

The previous prime is 53075507. The next prime is 53075527. The reversal of 53075509 is 90557035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49914225 + 3161284 = 7065^2 + 1778^2 .

It is a cyclic number.

It is not a de Polignac number, because 53075509 - 2¹ = 53075507 is a prime.

Together with 53075507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53075507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26537754 + 26537755.

It is an arithmetic number, because the mean of its divisors is an integer number (26537755).

Almost surely, 2^53075509 is an apocalyptic number.

It is an amenable number.

53075509 is a deficient number, since it is larger than the sum of its proper divisors (1).

53075509 is an equidigital number, since it uses as much as digits as its factorization.

53075509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23625, while the sum is 34.

The square root of 53075509 is about 7285.2940228930. The cubic root of 53075509 is about 375.8068765480.

It can be divided in two parts, 5307 and 5509, that added together give a square (10816 = 104²).

The spelling of 53075509 in words is "fifty-three million, seventy-five thousand, five hundred nine".