53542009 has 8 divisors (see below), whose sum is σ = 54885600. Its totient is φ = 52202976.

The previous prime is 53542007. The next prime is 53542043. The reversal of 53542009 is 90024535.

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 53542009 - 2¹ = 53542007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53542003) 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, 44514 + ... + 45700.

It is an arithmetic number, because the mean of its divisors is an integer number (6860700).

Almost surely, 2^53542009 is an apocalyptic number.

It is an amenable number.

53542009 is a deficient number, since it is larger than the sum of its proper divisors (1343591).

53542009 is a wasteful number, since it uses less digits than its factorization.

53542009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 53542009 is about 7317.2405317852. The cubic root of 53542009 is about 376.9047009623.

The spelling of 53542009 in words is "fifty-three million, five hundred forty-two thousand, nine".