65551061 has 2 divisors, whose sum is σ = 65551062. Its totient is φ = 65551060.

The previous prime is 65551043. The next prime is 65551091. The reversal of 65551061 is 16015556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48790225 + 16760836 = 6985^2 + 4094^2 .

It is a cyclic number.

It is not a de Polignac number, because 65551061 - 2¹⁸ = 65288917 is a prime.

It is a Chen prime.

It is equal to p_3871190 and since 65551061 and 3871190 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65551091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32775530 + 32775531.

It is an arithmetic number, because the mean of its divisors is an integer number (32775531).

Almost surely, 2^65551061 is an apocalyptic number.

It is an amenable number.

65551061 is a deficient number, since it is larger than the sum of its proper divisors (1).

65551061 is an equidigital number, since it uses as much as digits as its factorization.

65551061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 65551061 is about 8096.3609726840. The cubic root of 65551061 is about 403.2056184818.

The spelling of 65551061 in words is "sixty-five million, five hundred fifty-one thousand, sixty-one".