53145605 has 4 divisors (see below), whose sum is σ = 63774732. Its totient is φ = 42516480.

The previous prime is 53145601. The next prime is 53145613. The reversal of 53145605 is 50654135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42003361 + 11142244 = 6481^2 + 3338^2 .

It is not a de Polignac number, because 53145605 - 2² = 53145601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53145601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5314556 + ... + 5314565.

It is an arithmetic number, because the mean of its divisors is an integer number (15943683).

Almost surely, 2^53145605 is an apocalyptic number.

It is an amenable number.

53145605 is a deficient number, since it is larger than the sum of its proper divisors (10629127).

53145605 is a wasteful number, since it uses less digits than its factorization.

53145605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10629126.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 53145605 is about 7290.1032228632. The cubic root of 53145605 is about 375.9722445371.

The spelling of 53145605 in words is "fifty-three million, one hundred forty-five thousand, six hundred five".