65551469 has 2 divisors, whose sum is σ = 65551470. Its totient is φ = 65551468.

The previous prime is 65551459. The next prime is 65551477. The reversal of 65551469 is 96415556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62173225 + 3378244 = 7885^2 + 1838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65551469 is a prime.

It is a super-2 number, since 2×65551469² = 8593990176115922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65551429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32775734 + 32775735.

It is an arithmetic number, because the mean of its divisors is an integer number (32775735).

Almost surely, 2^65551469 is an apocalyptic number.

It is an amenable number.

65551469 is a deficient number, since it is larger than the sum of its proper divisors (1).

65551469 is an equidigital number, since it uses as much as digits as its factorization.

65551469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 41.

The square root of 65551469 is about 8096.3861691498. The cubic root of 65551469 is about 403.2064550183.

The spelling of 65551469 in words is "sixty-five million, five hundred fifty-one thousand, four hundred sixty-nine".