53405613 has 12 divisors (see below), whose sum is σ = 78936000. Its totient is φ = 34775496.

The previous prime is 53405587. The next prime is 53405621. The reversal of 53405613 is 31650435.

53405613 is a `hidden beast` number, since 5 + 3 + 40 + 5 + 613 = 666.

It is not a de Polignac number, because 53405613 - 2⁶ = 53405549 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53405663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68613 + ... + 69386.

It is an arithmetic number, because the mean of its divisors is an integer number (6578000).

Almost surely, 2^53405613 is an apocalyptic number.

It is an amenable number.

53405613 is a deficient number, since it is larger than the sum of its proper divisors (25530387).

53405613 is a wasteful number, since it uses less digits than its factorization.

53405613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138048 (or 138045 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 53405613 is about 7307.9144083658. The cubic root of 53405613 is about 376.5843792192.

The spelling of 53405613 in words is "fifty-three million, four hundred five thousand, six hundred thirteen".