66125053 has 8 divisors (see below), whose sum is σ = 70090488. Its totient is φ = 62168064.

The previous prime is 66125041. The next prime is 66125057. The reversal of 66125053 is 35052166.

It can be written as a sum of positive squares in 4 ways, for example, as 35676729 + 30448324 = 5973^2 + 5518^2 .

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 66125053 - 2¹⁷ = 65993981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66125057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21925 + ... + 24757.

It is an arithmetic number, because the mean of its divisors is an integer number (8761311).

Almost surely, 2^66125053 is an apocalyptic number.

It is an amenable number.

66125053 is a deficient number, since it is larger than the sum of its proper divisors (3965435).

66125053 is a wasteful number, since it uses less digits than its factorization.

66125053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223.

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

The square root of 66125053 is about 8131.7312424846. The cubic root of 66125053 is about 404.3790779927.

The spelling of 66125053 in words is "sixty-six million, one hundred twenty-five thousand, fifty-three".