1355477161 has 2 divisors, whose sum is σ = 1355477162. Its totient is φ = 1355477160.

The previous prime is 1355477159. The next prime is 1355477171. The reversal of 1355477161 is 1617745531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1107225625 + 248251536 = 33275^2 + 15756^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355477161 - 2¹ = 1355477159 is a prime.

Together with 1355477159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1355477171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677738580 + 677738581.

It is an arithmetic number, because the mean of its divisors is an integer number (677738581).

Almost surely, 2^1355477161 is an apocalyptic number.

It is an amenable number.

1355477161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355477161 is an equidigital number, since it uses as much as digits as its factorization.

1355477161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 40.

The square root of 1355477161 is about 36816.8054154621. The cubic root of 1355477161 is about 1106.7021019262.

The spelling of 1355477161 in words is "one billion, three hundred fifty-five million, four hundred seventy-seven thousand, one hundred sixty-one".