66355453 has 2 divisors, whose sum is σ = 66355454. Its totient is φ = 66355452.

The previous prime is 66355447. The next prime is 66355459. The reversal of 66355453 is 35455366.

It is a balanced prime because it is at equal distance from previous prime (66355447) and next prime (66355459).

It can be written as a sum of positive squares in only one way, i.e., 66145689 + 209764 = 8133^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 66355453 - 2¹³ = 66347261 is a prime.

It is a super-2 number, since 2×66355453² = 8806092285670418, which contains 22 as substring.

It is equal to p_3915982 and since 66355453 and 3915982 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 (66355459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33177726 + 33177727.

It is an arithmetic number, because the mean of its divisors is an integer number (33177727).

Almost surely, 2^66355453 is an apocalyptic number.

It is an amenable number.

66355453 is a deficient number, since it is larger than the sum of its proper divisors (1).

66355453 is an equidigital number, since it uses as much as digits as its factorization.

66355453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 37.

The square root of 66355453 is about 8145.8856485959. The cubic root of 66355453 is about 404.8481938804.

The spelling of 66355453 in words is "sixty-six million, three hundred fifty-five thousand, four hundred fifty-three".