53611505 has 12 divisors (see below), whose sum is σ = 67255860. Its totient is φ = 41022432.

The previous prime is 53611501. The next prime is 53611511. The reversal of 53611505 is 50511635.

53611505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30724849 + 22886656 = 5543^2 + 4784^2 .

It is not a de Polignac number, because 53611505 - 2² = 53611501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53611501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7490 + ... + 12779.

It is an arithmetic number, because the mean of its divisors is an integer number (5604655).

Almost surely, 2^53611505 is an apocalyptic number.

It is an amenable number.

53611505 is a deficient number, since it is larger than the sum of its proper divisors (13644355).

53611505 is a wasteful number, since it uses less digits than its factorization.

53611505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20320 (or 20297 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 53611505 is about 7321.9877765536. The cubic root of 53611505 is about 377.0677009755.

The spelling of 53611505 in words is "fifty-three million, six hundred eleven thousand, five hundred five".