53148565 has 4 divisors (see below), whose sum is σ = 63778284. Its totient is φ = 42518848.

The previous prime is 53148551. The next prime is 53148617. The reversal of 53148565 is 56584135.

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 18173169 + 34975396 = 4263^2 + 5914^2 .

It is a cyclic number.

It is not a de Polignac number, because 53148565 - 2¹¹ = 53146517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5314852 + ... + 5314861.

It is an arithmetic number, because the mean of its divisors is an integer number (15944571).

Almost surely, 2^53148565 is an apocalyptic number.

It is an amenable number.

53148565 is a deficient number, since it is larger than the sum of its proper divisors (10629719).

53148565 is a wasteful number, since it uses less digits than its factorization.

53148565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10629718.

The product of its digits is 72000, while the sum is 37.

The square root of 53148565 is about 7290.3062349945. The cubic root of 53148565 is about 375.9792244632.

The spelling of 53148565 in words is "fifty-three million, one hundred forty-eight thousand, five hundred sixty-five".