53841985 has 4 divisors (see below), whose sum is σ = 64610388. Its totient is φ = 43073584.

The previous prime is 53841971. The next prime is 53842003. The reversal of 53841985 is 58914835.

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 30869136 + 22972849 = 5556^2 + 4793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53841985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5384194 + ... + 5384203.

It is an arithmetic number, because the mean of its divisors is an integer number (16152597).

Almost surely, 2^53841985 is an apocalyptic number.

It is an amenable number.

53841985 is a deficient number, since it is larger than the sum of its proper divisors (10768403).

53841985 is a wasteful number, since it uses less digits than its factorization.

53841985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10768402.

The product of its digits is 172800, while the sum is 43.

The square root of 53841985 is about 7337.7097925715. The cubic root of 53841985 is about 377.6072762089.

The spelling of 53841985 in words is "fifty-three million, eight hundred forty-one thousand, nine hundred eighty-five".