53211517 has 4 divisors (see below), whose sum is σ = 53304316. Its totient is φ = 53118720.

The previous prime is 53211493. The next prime is 53211527. The reversal of 53211517 is 71511235.

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 40208281 + 13003236 = 6341^2 + 3606^2 .

It is a cyclic number.

It is not a de Polignac number, because 53211517 - 2¹¹ = 53209469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53211491 and 53211500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53211527) 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 in 3 ways as a sum of consecutive naturals, for example, 45534 + ... + 46687.

It is an arithmetic number, because the mean of its divisors is an integer number (13326079).

Almost surely, 2^53211517 is an apocalyptic number.

It is an amenable number.

53211517 is a deficient number, since it is larger than the sum of its proper divisors (92799).

53211517 is an equidigital number, since it uses as much as digits as its factorization.

53211517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92798.

The product of its digits is 1050, while the sum is 25.

The square root of 53211517 is about 7294.6224713826. The cubic root of 53211517 is about 376.1276091874.

The spelling of 53211517 in words is "fifty-three million, two hundred eleven thousand, five hundred seventeen".