53665073 has 24 divisors (see below), whose sum is σ = 71398656. Its totient is φ = 39346560.

The previous prime is 53665069. The next prime is 53665091. The reversal of 53665073 is 37056635.

It is not a de Polignac number, because 53665073 - 2² = 53665069 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53665013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12536 + ... + 16262.

It is an arithmetic number, because the mean of its divisors is an integer number (2974944).

Almost surely, 2^53665073 is an apocalyptic number.

It is an amenable number.

53665073 is a deficient number, since it is larger than the sum of its proper divisors (17733583).

53665073 is a wasteful number, since it uses less digits than its factorization.

53665073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 35.

The square root of 53665073 is about 7325.6448862882. The cubic root of 53665073 is about 377.1932464088.

The spelling of 53665073 in words is "fifty-three million, six hundred sixty-five thousand, seventy-three".