71053609 has 8 divisors (see below), whose sum is σ = 78200352. Its totient is φ = 64021440.

The previous prime is 71053589. The next prime is 71053621. The reversal of 71053609 is 90635017.

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 71053609 - 2⁹ = 71053097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71053669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27339 + ... + 29824.

It is an arithmetic number, because the mean of its divisors is an integer number (9775044).

Almost surely, 2^71053609 is an apocalyptic number.

It is an amenable number.

71053609 is a deficient number, since it is larger than the sum of its proper divisors (7146743).

71053609 is a wasteful number, since it uses less digits than its factorization.

71053609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57287.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 71053609 is about 8429.3302818195. The cubic root of 71053609 is about 414.1859670792.

The spelling of 71053609 in words is "seventy-one million, fifty-three thousand, six hundred nine".