53723565 has 24 divisors (see below), whose sum is σ = 106424448. Its totient is φ = 24559200.

The previous prime is 53723543. The next prime is 53723567. The reversal of 53723565 is 56532735.

It is not a de Polignac number, because 53723565 - 2⁷ = 53723437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53723567) 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, 84961 + ... + 85590.

It is an arithmetic number, because the mean of its divisors is an integer number (4434352).

Almost surely, 2^53723565 is an apocalyptic number.

It is an amenable number.

53723565 is a deficient number, since it is larger than the sum of its proper divisors (52700883).

53723565 is a wasteful number, since it uses less digits than its factorization.

53723565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170569 (or 170566 counting only the distinct ones).

The product of its digits is 94500, while the sum is 36.

The square root of 53723565 is about 7329.6360755497. The cubic root of 53723565 is about 377.3302366661.

The spelling of 53723565 in words is "fifty-three million, seven hundred twenty-three thousand, five hundred sixty-five".