53630645 has 4 divisors (see below), whose sum is σ = 64356780. Its totient is φ = 42904512.

The previous prime is 53630639. The next prime is 53630653. The reversal of 53630645 is 54603635.

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 22905796 + 30724849 = 4786^2 + 5543^2 .

It is a cyclic number.

It is not a de Polignac number, because 53630645 - 2⁶ = 53630581 is a prime.

It is a Curzon 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, 5363060 + ... + 5363069.

It is an arithmetic number, because the mean of its divisors is an integer number (16089195).

Almost surely, 2^53630645 is an apocalyptic number.

It is an amenable number.

53630645 is a deficient number, since it is larger than the sum of its proper divisors (10726135).

53630645 is a wasteful number, since it uses less digits than its factorization.

53630645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10726134.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 53630645 is about 7323.2946820403. The cubic root of 53630645 is about 377.1125683170.

The spelling of 53630645 in words is "fifty-three million, six hundred thirty thousand, six hundred forty-five".