3505218061 has 2 divisors, whose sum is σ = 3505218062. Its totient is φ = 3505218060.

The previous prime is 3505218047. The next prime is 3505218089. The reversal of 3505218061 is 1608125053.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2971885225 + 533332836 = 54515^2 + 23094^2 .

It is an emirp because it is prime and its reverse (1608125053) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3505218061 - 2¹⁷ = 3505086989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3505218091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1752609030 + 1752609031.

It is an arithmetic number, because the mean of its divisors is an integer number (1752609031).

Almost surely, 2^3505218061 is an apocalyptic number.

It is an amenable number.

3505218061 is a deficient number, since it is larger than the sum of its proper divisors (1).

3505218061 is an equidigital number, since it uses as much as digits as its factorization.

3505218061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 3505218061 is about 59204.8820706536. The cubic root of 3505218061 is about 1519.0486401591.

The spelling of 3505218061 in words is "three billion, five hundred five million, two hundred eighteen thousand, sixty-one".