53053513 has 4 divisors (see below), whose sum is σ = 53118340. Its totient is φ = 52988688.

The previous prime is 53053501. The next prime is 53053519. The reversal of 53053513 is 31535035.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36626704 + 16426809 = 6052^2 + 4053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53053513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53053519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31170 + ... + 32827.

It is an arithmetic number, because the mean of its divisors is an integer number (13279585).

Almost surely, 2^53053513 is an apocalyptic number.

It is an amenable number.

53053513 is a deficient number, since it is larger than the sum of its proper divisors (64827).

53053513 is an equidigital number, since it uses as much as digits as its factorization.

53053513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64826.

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 53053513 is about 7283.7842499624. The cubic root of 53053513 is about 375.7549543564.

Adding to 53053513 its reverse (31535035), we get a palindrome (84588548).

The spelling of 53053513 in words is "fifty-three million, fifty-three thousand, five hundred thirteen".