53944565 has 8 divisors (see below), whose sum is σ = 64807128. Its totient is φ = 43106560.

The previous prime is 53944547. The next prime is 53944567. The reversal of 53944565 is 56544935.

It can be written as a sum of positive squares in 4 ways, for example, as 39601 + 53904964 = 199^2 + 7342^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53944565 - 2²⁰ = 52895989 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 (53944567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896 + ... + 10425.

It is an arithmetic number, because the mean of its divisors is an integer number (8100891).

Almost surely, 2^53944565 is an apocalyptic number.

It is an amenable number.

53944565 is a deficient number, since it is larger than the sum of its proper divisors (10862563).

53944565 is a wasteful number, since it uses less digits than its factorization.

53944565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12279.

The product of its digits is 324000, while the sum is 41.

The square root of 53944565 is about 7344.6963858283. The cubic root of 53944565 is about 377.8469304556.

The spelling of 53944565 in words is "fifty-three million, nine hundred forty-four thousand, five hundred sixty-five".