53433389 has 4 divisors (see below), whose sum is σ = 53450460. Its totient is φ = 53416320.

The previous prime is 53433383. The next prime is 53433403. The reversal of 53433389 is 98333435.

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 35200489 + 18232900 = 5933^2 + 4270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53433389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53433383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342 + ... + 10599.

It is an arithmetic number, because the mean of its divisors is an integer number (13362615).

Almost surely, 2^53433389 is an apocalyptic number.

It is an amenable number.

53433389 is a deficient number, since it is larger than the sum of its proper divisors (17071).

53433389 is a wasteful number, since it uses less digits than its factorization.

53433389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17070.

The product of its digits is 116640, while the sum is 38.

The square root of 53433389 is about 7309.8145667315. The cubic root of 53433389 is about 376.6496544731.

The spelling of 53433389 in words is "fifty-three million, four hundred thirty-three thousand, three hundred eighty-nine".