53115305 has 4 divisors (see below), whose sum is σ = 63738372. Its totient is φ = 42492240.

The previous prime is 53115301. The next prime is 53115329. The reversal of 53115305 is 50351135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50351135 = 5 ⋅10070227.

It can be written as a sum of positive squares in 2 ways, for example, as 19254544 + 33860761 = 4388^2 + 5819^2 .

It is not a de Polignac number, because 53115305 - 2² = 53115301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53115301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5311526 + ... + 5311535.

It is an arithmetic number, because the mean of its divisors is an integer number (15934593).

Almost surely, 2^53115305 is an apocalyptic number.

It is an amenable number.

53115305 is a deficient number, since it is larger than the sum of its proper divisors (10623067).

53115305 is a wasteful number, since it uses less digits than its factorization.

53115305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10623066.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 53115305 is about 7288.0247666978. The cubic root of 53115305 is about 375.9007797085.

The spelling of 53115305 in words is "fifty-three million, one hundred fifteen thousand, three hundred five".