53289999 has 36 divisors (see below), whose sum is σ = 90253800. Its totient is φ = 30209760.

The previous prime is 53289997. The next prime is 53290021. The reversal of 53289999 is 99998235.

It is a Cunningham number, because it is equal to 7300²-1.

It is not a de Polignac number, because 53289999 - 2¹ = 53289997 is a prime.

53289999 is a modest number, since divided by 9999 gives 5328 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53289997) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 65304 + ... + 66114.

It is an arithmetic number, because the mean of its divisors is an integer number (2507050).

Almost surely, 2^53289999 is an apocalyptic number.

53289999 is a deficient number, since it is larger than the sum of its proper divisors (36963801).

53289999 is a wasteful number, since it uses less digits than its factorization.

53289999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 970 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 53289999 is about 7299.9999315068. Note that the first 4 decimals coincide. The cubic root of 53289999 is about 376.3124360060.

The spelling of 53289999 in words is "fifty-three million, two hundred eighty-nine thousand, nine hundred ninety-nine".