1335563261 has 2 divisors, whose sum is σ = 1335563262. Its totient is φ = 1335563260.

The previous prime is 1335563249. The next prime is 1335563263. The reversal of 1335563261 is 1623655331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1283000761 + 52562500 = 35819^2 + 7250^2 .

It is an emirp because it is prime and its reverse (1623655331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1335563261 - 2¹⁸ = 1335301117 is a prime.

Together with 1335563263, 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 (1335563263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667781630 + 667781631.

It is an arithmetic number, because the mean of its divisors is an integer number (667781631).

Almost surely, 2^1335563261 is an apocalyptic number.

It is an amenable number.

1335563261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1335563261 is an equidigital number, since it uses as much as digits as its factorization.

1335563261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 35.

The square root of 1335563261 is about 36545.3589529505. The cubic root of 1335563261 is about 1101.2556627951.

The spelling of 1335563261 in words is "one billion, three hundred thirty-five million, five hundred sixty-three thousand, two hundred sixty-one".