66121053 has 8 divisors (see below), whose sum is σ = 88389600. Its totient is φ = 43966608.

The previous prime is 66121039. The next prime is 66121063. The reversal of 66121053 is 35012166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66121053 - 2⁸ = 66120797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66121063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27163 + ... + 29496.

It is an arithmetic number, because the mean of its divisors is an integer number (11048700).

Almost surely, 2^66121053 is an apocalyptic number.

It is an amenable number.

66121053 is a deficient number, since it is larger than the sum of its proper divisors (22268547).

66121053 is a wasteful number, since it uses less digits than its factorization.

66121053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57051.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 66121053 is about 8131.4852886788. The cubic root of 66121053 is about 404.3709240034.

The spelling of 66121053 in words is "sixty-six million, one hundred twenty-one thousand, fifty-three".