53999569 has 8 divisors (see below), whose sum is σ = 59391360. Its totient is φ = 48784656.

The previous prime is 53999503. The next prime is 53999587. The reversal of 53999569 is 96599935.

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

It is a cyclic number.

It is not a de Polignac number, because 53999569 - 2¹¹ = 53997521 is a prime.

It is a super-2 number, since 2×53999569² = 5831906904371522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53999069) 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, 43579 + ... + 44800.

It is an arithmetic number, because the mean of its divisors is an integer number (7423920).

Almost surely, 2^53999569 is an apocalyptic number.

It is an amenable number.

53999569 is a deficient number, since it is larger than the sum of its proper divisors (5391791).

53999569 is a wasteful number, since it uses less digits than its factorization.

53999569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88439.

The product of its digits is 2952450, while the sum is 55.

The square root of 53999569 is about 7348.4399024555. The cubic root of 53999569 is about 377.9753093621.

The spelling of 53999569 in words is "fifty-three million, nine hundred ninety-nine thousand, five hundred sixty-nine".