53144389 has 8 divisors (see below), whose sum is σ = 53692920. Its totient is φ = 52598976.

The previous prime is 53144383. The next prime is 53144393. The reversal of 53144389 is 98344135.

It can be written as a sum of positive squares in 4 ways, for example, as 828100 + 52316289 = 910^2 + 7233^2 .

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

It is not a de Polignac number, because 53144389 - 2³ = 53144381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53144381) 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, 47367 + ... + 48475.

It is an arithmetic number, because the mean of its divisors is an integer number (6711615).

Almost surely, 2^53144389 is an apocalyptic number.

It is an amenable number.

53144389 is a deficient number, since it is larger than the sum of its proper divisors (548531).

53144389 is a wasteful number, since it uses less digits than its factorization.

53144389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559.

The product of its digits is 51840, while the sum is 37.

The square root of 53144389 is about 7290.0198216466. The cubic root of 53144389 is about 375.9693770329.

The spelling of 53144389 in words is "fifty-three million, one hundred forty-four thousand, three hundred eighty-nine".