65553407 has 2 divisors, whose sum is σ = 65553408. Its totient is φ = 65553406.

The previous prime is 65553361. The next prime is 65553409. The reversal of 65553407 is 70435556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65553407 - 2¹⁸ = 65291263 is a prime.

Together with 65553409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65553409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32776703 + 32776704.

It is an arithmetic number, because the mean of its divisors is an integer number (32776704).

Almost surely, 2^65553407 is an apocalyptic number.

65553407 is a deficient number, since it is larger than the sum of its proper divisors (1).

65553407 is an equidigital number, since it uses as much as digits as its factorization.

65553407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 65553407 is about 8096.5058512917. The cubic root of 65553407 is about 403.2104285189.

The spelling of 65553407 in words is "sixty-five million, five hundred fifty-three thousand, four hundred seven".