53831389 has 4 divisors (see below), whose sum is σ = 56664640. Its totient is φ = 50998140.

The previous prime is 53831387. The next prime is 53831413. The reversal of 53831389 is 98313835.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53831389 - 2¹ = 53831387 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53831381) 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, 1416597 + ... + 1416634.

It is an arithmetic number, because the mean of its divisors is an integer number (14166160).

Almost surely, 2^53831389 is an apocalyptic number.

It is an amenable number.

53831389 is a deficient number, since it is larger than the sum of its proper divisors (2833251).

53831389 is a wasteful number, since it uses less digits than its factorization.

53831389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833250.

The product of its digits is 77760, while the sum is 40.

The square root of 53831389 is about 7336.9877333958. The cubic root of 53831389 is about 377.5825037864.

The spelling of 53831389 in words is "fifty-three million, eight hundred thirty-one thousand, three hundred eighty-nine".