53111613 has 8 divisors (see below), whose sum is σ = 72729568. Its totient is φ = 34450704.

The previous prime is 53111599. The next prime is 53111633. The reversal of 53111613 is 31611135.

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

It is not a de Polignac number, because 53111613 - 2⁵ = 53111581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53111613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53111633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239131 + ... + 239352.

It is an arithmetic number, because the mean of its divisors is an integer number (9091196).

Almost surely, 2^53111613 is an apocalyptic number.

It is an amenable number.

53111613 is a deficient number, since it is larger than the sum of its proper divisors (19617955).

53111613 is a wasteful number, since it uses less digits than its factorization.

53111613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478523.

The product of its digits is 270, while the sum is 21.

The square root of 53111613 is about 7287.7714700723. The cubic root of 53111613 is about 375.8920699914.

Adding to 53111613 its reverse (31611135), we get a palindrome (84722748).

The spelling of 53111613 in words is "fifty-three million, one hundred eleven thousand, six hundred thirteen".