1355266361 has 2 divisors, whose sum is σ = 1355266362. Its totient is φ = 1355266360.

The previous prime is 1355266351. The next prime is 1355266397. The reversal of 1355266361 is 1636625531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 899700025 + 455566336 = 29995^2 + 21344^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355266361 - 2¹⁰ = 1355265337 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355266351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677633180 + 677633181.

It is an arithmetic number, because the mean of its divisors is an integer number (677633181).

Almost surely, 2^1355266361 is an apocalyptic number.

It is an amenable number.

1355266361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355266361 is an equidigital number, since it uses as much as digits as its factorization.

1355266361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 38.

The square root of 1355266361 is about 36813.9424810764. The cubic root of 1355266361 is about 1106.6447285513.

The spelling of 1355266361 in words is "one billion, three hundred fifty-five million, two hundred sixty-six thousand, three hundred sixty-one".