53487889 has 16 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 42183360.

The previous prime is 53487887. The next prime is 53487901. The reversal of 53487889 is 98878435.

It is a cyclic number.

It is not a de Polignac number, because 53487889 - 2¹ = 53487887 is a prime.

Its product of digits (1935360) is a multiple of the sum of its prime divisors (1920).

It is not an unprimeable number, because it can be changed into a prime (53487881) 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, 34644 + ... + 36154.

It is an arithmetic number, because the mean of its divisors is an integer number (4127760).

Almost surely, 2^53487889 is an apocalyptic number.

It is an amenable number.

53487889 is a deficient number, since it is larger than the sum of its proper divisors (12556271).

53487889 is a wasteful number, since it uses less digits than its factorization.

53487889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920.

The product of its digits is 1935360, while the sum is 52.

The square root of 53487889 is about 7313.5414813892. The cubic root of 53487889 is about 376.7776670101. Note that the first 3 decimals are identical.

The spelling of 53487889 in words is "fifty-three million, four hundred eighty-seven thousand, eight hundred eighty-nine".