53538489 has 21 divisors (see below), whose sum is σ = 80568309. Its totient is φ = 35560620.

The previous prime is 53538479. The next prime is 53538539. The reversal of 53538489 is 98483535.

It is a happy number.

The square root of 53538489 is 7317.

It is a perfect power (a square), and thus also a powerful number.

53538489 is a `hidden beast` number, since 535 + 38 + 4 + 89 = 666.

It is not a de Polignac number, because 53538489 - 2⁷ = 53538361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53538439) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 197424 + ... + 197694.

Almost surely, 2^53538489 is an apocalyptic number.

53538489 is the 7317-th square number.

53538489 is the 3659-th centered octagonal number.

It is an amenable number.

53538489 is a deficient number, since it is larger than the sum of its proper divisors (27029820).

53538489 is an frugal number, since it uses more digits than its factorization.

53538489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 274 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The cubic root of 53538489 is about 376.8964411949.

Multiplying 53538489 by its product of digits (518400), we get a square (27754352697600 = 5268240²).

The spelling of 53538489 in words is "fifty-three million, five hundred thirty-eight thousand, four hundred eighty-nine".