68520055 has 8 divisors (see below), whose sum is σ = 82545552. Its totient is φ = 54601728.

The previous prime is 68520037. The next prime is 68520077. The reversal of 68520055 is 55002586.

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 68520055 - 2⁹ = 68519543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68519999 and 68520026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25377 + ... + 27946.

It is an arithmetic number, because the mean of its divisors is an integer number (10318194).

Almost surely, 2^68520055 is an apocalyptic number.

68520055 is a deficient number, since it is larger than the sum of its proper divisors (14025497).

68520055 is a wasteful number, since it uses less digits than its factorization.

68520055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53585.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 68520055 is about 8277.6841568158. The cubic root of 68520055 is about 409.2034007216.

The spelling of 68520055 in words is "sixty-eight million, five hundred twenty thousand, fifty-five".