66141251 has 8 divisors (see below), whose sum is σ = 72228144. Its totient is φ = 60066720.

The previous prime is 66141247. The next prime is 66141253. The reversal of 66141251 is 15214166.

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 66141251 - 2² = 66141247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66141251.

It is not an unprimeable number, because it can be changed into a prime (66141253) 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, 10865 + ... + 15821.

It is an arithmetic number, because the mean of its divisors is an integer number (9028518).

Almost surely, 2^66141251 is an apocalyptic number.

66141251 is a deficient number, since it is larger than the sum of its proper divisors (6086893).

66141251 is a wasteful number, since it uses less digits than its factorization.

66141251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6181.

The product of its digits is 1440, while the sum is 26.

The square root of 66141251 is about 8132.7271563726. The cubic root of 66141251 is about 404.4120942109.

The spelling of 66141251 in words is "sixty-six million, one hundred forty-one thousand, two hundred fifty-one".