53127509 has 4 divisors (see below), whose sum is σ = 53270316. Its totient is φ = 52984704.

The previous prime is 53127469. The next prime is 53127527. The reversal of 53127509 is 90572135.

53127509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90572135 = 5 ⋅18114427.

It can be written as a sum of positive squares in 2 ways, for example, as 35880100 + 17247409 = 5990^2 + 4153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53127509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55127509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70844 + ... + 71589.

It is an arithmetic number, because the mean of its divisors is an integer number (13317579).

Almost surely, 2^53127509 is an apocalyptic number.

It is an amenable number.

53127509 is a deficient number, since it is larger than the sum of its proper divisors (142807).

53127509 is a wasteful number, since it uses less digits than its factorization.

53127509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142806.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 53127509 is about 7288.8619825045. The cubic root of 53127509 is about 375.9295670283.

It can be divided in two parts, 5312 and 7509, that added together give a palindrome (12821).

The spelling of 53127509 in words is "fifty-three million, one hundred twenty-seven thousand, five hundred nine".