53408489 has 8 divisors (see below), whose sum is σ = 54405000. Its totient is φ = 52416000.

The previous prime is 53408419. The next prime is 53408521. The reversal of 53408489 is 98480435.

It can be written as a sum of positive squares in 4 ways, for example, as 3211264 + 50197225 = 1792^2 + 7085^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 53408489 - 2²⁰ = 52359913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53408419) 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, 42137 + ... + 43385.

It is an arithmetic number, because the mean of its divisors is an integer number (6800625).

Almost surely, 2^53408489 is an apocalyptic number.

It is an amenable number.

53408489 is a deficient number, since it is larger than the sum of its proper divisors (996511).

53408489 is a wasteful number, since it uses less digits than its factorization.

53408489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 53408489 is about 7308.1111786836. Note that the first 4 decimals coincide. The cubic root of 53408489 is about 376.5911390407.

The spelling of 53408489 in words is "fifty-three million, four hundred eight thousand, four hundred eighty-nine".