68526121 has 4 divisors (see below), whose sum is σ = 68593492. Its totient is φ = 68458752.

The previous prime is 68526097. The next prime is 68526137. The reversal of 68526121 is 12162586.

It is the 3380-th star number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54169600 + 14356521 = 7360^2 + 3789^2 .

It is a cyclic number.

It is not a de Polignac number, because 68526121 - 2¹⁷ = 68395049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68526421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32136 + ... + 34201.

It is an arithmetic number, because the mean of its divisors is an integer number (17148373).

Almost surely, 2^68526121 is an apocalyptic number.

It is an amenable number.

68526121 is a deficient number, since it is larger than the sum of its proper divisors (67371).

68526121 is a wasteful number, since it uses less digits than its factorization.

68526121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67370.

The product of its digits is 5760, while the sum is 31.

The square root of 68526121 is about 8278.0505555354. The cubic root of 68526121 is about 409.2154757974.

The spelling of 68526121 in words is "sixty-eight million, five hundred twenty-six thousand, one hundred twenty-one".