53442489 has 8 divisors (see below), whose sum is σ = 71818240. Its totient is φ = 35347536.

The previous prime is 53442469. The next prime is 53442491. The reversal of 53442489 is 98424435.

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

It is not a de Polignac number, because 53442489 - 2⁵ = 53442457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53442449) 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, 69754 + ... + 70515.

It is an arithmetic number, because the mean of its divisors is an integer number (8977280).

Almost surely, 2^53442489 is an apocalyptic number.

It is an amenable number.

53442489 is a deficient number, since it is larger than the sum of its proper divisors (18375751).

53442489 is a wasteful number, since it uses less digits than its factorization.

53442489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140399.

The product of its digits is 138240, while the sum is 39.

The square root of 53442489 is about 7310.4369910423. The cubic root of 53442489 is about 376.6710350952.

The spelling of 53442489 in words is "fifty-three million, four hundred forty-two thousand, four hundred eighty-nine".