53205705 has 48 divisors (see below), whose sum is σ = 107013504. Its totient is φ = 23950080.

The previous prime is 53205697. The next prime is 53205707. The reversal of 53205705 is 50750235.

It is not a de Polignac number, because 53205705 - 2³ = 53205697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53205707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19845 + ... + 22365.

It is an arithmetic number, because the mean of its divisors is an integer number (2229448).

Almost surely, 2^53205705 is an apocalyptic number.

It is an amenable number.

53205705 is an abundant number, since it is smaller than the sum of its proper divisors (53807799).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53205705 is a wasteful number, since it uses less digits than its factorization.

53205705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2603 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 53205705 is about 7294.2240848496. The cubic root of 53205705 is about 376.1139145753.

It can be divided in two parts, 5320 and 5705, that added together give a square (11025 = 105²).

The spelling of 53205705 in words is "fifty-three million, two hundred five thousand, seven hundred five".