53657605 has 8 divisors (see below), whose sum is σ = 64501272. Its totient is φ = 42851328.

The previous prime is 53657599. The next prime is 53657629. The reversal of 53657605 is 50675635.

It can be written as a sum of positive squares in 4 ways, for example, as 1572516 + 52085089 = 1254^2 + 7217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53657605 - 2⁵ = 53657573 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 7 ways as a sum of consecutive naturals, for example, 6084 + ... + 12013.

It is an arithmetic number, because the mean of its divisors is an integer number (8062659).

Almost surely, 2^53657605 is an apocalyptic number.

It is an amenable number.

53657605 is a deficient number, since it is larger than the sum of its proper divisors (10843667).

53657605 is a wasteful number, since it uses less digits than its factorization.

53657605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18695.

The product of its (nonzero) digits is 94500, while the sum is 37.

The square root of 53657605 is about 7325.1351523368. The cubic root of 53657605 is about 377.1757489337.

The spelling of 53657605 in words is "fifty-three million, six hundred fifty-seven thousand, six hundred five".