53205765 has 24 divisors (see below), whose sum is σ = 87987744. Its totient is φ = 27453600.

The previous prime is 53205709. The next prime is 53205769. The reversal of 53205765 is 56750235.

It is not a de Polignac number, because 53205765 - 2⁷ = 53205637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53205769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12570 + ... + 16260.

It is an arithmetic number, because the mean of its divisors is an integer number (3666156).

Almost surely, 2^53205765 is an apocalyptic number.

It is an amenable number.

53205765 is a deficient number, since it is larger than the sum of its proper divisors (34781979).

53205765 is a wasteful number, since it uses less digits than its factorization.

53205765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761 (or 3730 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 53205765 is about 7294.2281976917. The cubic root of 53205765 is about 376.1140559563.

The spelling of 53205765 in words is "fifty-three million, two hundred five thousand, seven hundred sixty-five".