717320055 has 8 divisors (see below), whose sum is σ = 1147712112. Its totient is φ = 382570688.

The previous prime is 717320041. The next prime is 717320059. The reversal of 717320055 is 550023717.

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 717320055 - 2⁶ = 717319991 is a prime.

It is a super-2 number, since 2×717320055² = 1029096122610406050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (717320059) 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, 23910654 + ... + 23910683.

It is an arithmetic number, because the mean of its divisors is an integer number (143464014).

Almost surely, 2^717320055 is an apocalyptic number.

717320055 is a deficient number, since it is larger than the sum of its proper divisors (430392057).

717320055 is a wasteful number, since it uses less digits than its factorization.

717320055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47821345.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 717320055 is about 26782.8313477123. The cubic root of 717320055 is about 895.1675372723.

The spelling of 717320055 in words is "seven hundred seventeen million, three hundred twenty thousand, fifty-five".