53640605 has 8 divisors (see below), whose sum is σ = 65184000. Its totient is φ = 42368976.

The previous prime is 53640599. The next prime is 53640637. The reversal of 53640605 is 50604635.

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 53640605 - 2⁴ = 53640589 is a prime.

It is a super-3 number, since 3×53640605³ (a number of 24 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 67505 + ... + 68294.

It is an arithmetic number, because the mean of its divisors is an integer number (8148000).

Almost surely, 2^53640605 is an apocalyptic number.

It is an amenable number.

53640605 is a deficient number, since it is larger than the sum of its proper divisors (11543395).

53640605 is a wasteful number, since it uses less digits than its factorization.

53640605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135883.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 53640605 is about 7323.9746722664. The cubic root of 53640605 is about 377.1359119898.

It can be divided in two parts, 53640 and 605, that added together give a palindrome (54245).

The spelling of 53640605 in words is "fifty-three million, six hundred forty thousand, six hundred five".