Search a number
-
+
66052031 is a prime number
BaseRepresentation
bin1111101111110…
…1111110111111
311121021210100112
43323331332333
5113402131111
610315420235
71431301343
oct373757677
9147253315
1066052031
1134314961
121a15467b
13108b8856
148ab5623
155beae8b
hex3efdfbf

66052031 has 2 divisors, whose sum is σ = 66052032. Its totient is φ = 66052030.

The previous prime is 66052009. The next prime is 66052033. The reversal of 66052031 is 13025066.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-66052031 is a prime.

It is a super-2 number, since 2×660520312 = 8725741598449922, which contains 22 as substring.

Together with 66052033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 66051988 and 66052006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66052033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33026015 + 33026016.

It is an arithmetic number, because the mean of its divisors is an integer number (33026016).

Almost surely, 266052031 is an apocalyptic number.

66052031 is a deficient number, since it is larger than the sum of its proper divisors (1).

66052031 is an equidigital number, since it uses as much as digits as its factorization.

66052031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 66052031 is about 8127.2400604387. The cubic root of 66052031 is about 404.2301710160.

Adding to 66052031 its reverse (13025066), we get a palindrome (79077097).

The spelling of 66052031 in words is "sixty-six million, fifty-two thousand, thirty-one".