53427665 has 4 divisors (see below), whose sum is σ = 64113204. Its totient is φ = 42742128.

The previous prime is 53427659. The next prime is 53427683. The reversal of 53427665 is 56672435.

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 32706961 + 20720704 = 5719^2 + 4552^2 .

It is a cyclic number.

It is not a de Polignac number, because 53427665 - 2²² = 49233361 is a prime.

It is a Duffinian 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, 5342762 + ... + 5342771.

It is an arithmetic number, because the mean of its divisors is an integer number (16028301).

Almost surely, 2^53427665 is an apocalyptic number.

It is an amenable number.

53427665 is a deficient number, since it is larger than the sum of its proper divisors (10685539).

53427665 is a wasteful number, since it uses less digits than its factorization.

53427665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685538.

The product of its digits is 151200, while the sum is 38.

The square root of 53427665 is about 7309.4230278456. The cubic root of 53427665 is about 376.6362045831.

The spelling of 53427665 in words is "fifty-three million, four hundred twenty-seven thousand, six hundred sixty-five".