1105345261 has 2 divisors, whose sum is σ = 1105345262. Its totient is φ = 1105345260.

The previous prime is 1105345259. The next prime is 1105345291. The reversal of 1105345261 is 1625435011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 982822500 + 122522761 = 31350^2 + 11069^2 .

It is an emirp because it is prime and its reverse (1625435011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1105345261 - 2¹ = 1105345259 is a prime.

Together with 1105345259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105345291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552672630 + 552672631.

It is an arithmetic number, because the mean of its divisors is an integer number (552672631).

Almost surely, 2^1105345261 is an apocalyptic number.

It is an amenable number.

1105345261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105345261 is an equidigital number, since it uses as much as digits as its factorization.

1105345261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1105345261 is about 33246.7330876283. The cubic root of 1105345261 is about 1033.9494769962.

The spelling of 1105345261 in words is "one billion, one hundred five million, three hundred forty-five thousand, two hundred sixty-one".