66552371 has 2 divisors, whose sum is σ = 66552372. Its totient is φ = 66552370.

The previous prime is 66552337. The next prime is 66552377. The reversal of 66552371 is 17325566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66552371 - 2²² = 62358067 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66552377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33276185 + 33276186.

It is an arithmetic number, because the mean of its divisors is an integer number (33276186).

Almost surely, 2^66552371 is an apocalyptic number.

66552371 is a deficient number, since it is larger than the sum of its proper divisors (1).

66552371 is an equidigital number, since it uses as much as digits as its factorization.

66552371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 35.

The square root of 66552371 is about 8157.9636552267. The cubic root of 66552371 is about 405.2482773766.

The spelling of 66552371 in words is "sixty-six million, five hundred fifty-two thousand, three hundred seventy-one".