53381289 has 16 divisors (see below), whose sum is σ = 76938624. Its totient is φ = 32726400.

The previous prime is 53381281. The next prime is 53381297. The reversal of 53381289 is 98218335.

It is an interprime number because it is at equal distance from previous prime (53381281) and next prime (53381297).

It is not a de Polignac number, because 53381289 - 2³ = 53381281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (53381281) 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, 8524 + ... + 13394.

It is an arithmetic number, because the mean of its divisors is an integer number (4808664).

Almost surely, 2^53381289 is an apocalyptic number.

It is an amenable number.

53381289 is a deficient number, since it is larger than the sum of its proper divisors (23557335).

53381289 is a wasteful number, since it uses less digits than its factorization.

53381289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168.

The product of its digits is 51840, while the sum is 39.

The square root of 53381289 is about 7306.2499957228. The cubic root of 53381289 is about 376.5271977799.

The spelling of 53381289 in words is "fifty-three million, three hundred eighty-one thousand, two hundred eighty-nine".