53688889 has 16 divisors (see below), whose sum is σ = 58968000. Its totient is φ = 48686400.

The previous prime is 53688883. The next prime is 53688893. The reversal of 53688889 is 98888635.

It is a cyclic number.

It is not a de Polignac number, because 53688889 - 2⁵ = 53688857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53688883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76239 + ... + 76939.

It is an arithmetic number, because the mean of its divisors is an integer number (3685500).

Almost surely, 2^53688889 is an apocalyptic number.

It is an amenable number.

53688889 is a deficient number, since it is larger than the sum of its proper divisors (5279111).

53688889 is a wasteful number, since it uses less digits than its factorization.

53688889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888.

The product of its digits is 3317760, while the sum is 55.

The square root of 53688889 is about 7327.2702284002. The cubic root of 53688889 is about 377.2490363003.

The spelling of 53688889 in words is "fifty-three million, six hundred eighty-eight thousand, eight hundred eighty-nine".