66501151 has 2 divisors, whose sum is σ = 66501152. Its totient is φ = 66501150.

The previous prime is 66501143. The next prime is 66501187. The reversal of 66501151 is 15110566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66501151 - 2³ = 66501143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66501131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33250575 + 33250576.

It is an arithmetic number, because the mean of its divisors is an integer number (33250576).

Almost surely, 2^66501151 is an apocalyptic number.

66501151 is a deficient number, since it is larger than the sum of its proper divisors (1).

66501151 is an equidigital number, since it uses as much as digits as its factorization.

66501151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 66501151 is about 8154.8237871827. The cubic root of 66501151 is about 405.1442883742.

The spelling of 66501151 in words is "sixty-six million, five hundred one thousand, one hundred fifty-one".