1350277561 has 2 divisors, whose sum is σ = 1350277562. Its totient is φ = 1350277560.

The previous prime is 1350277549. The next prime is 1350277603. The reversal of 1350277561 is 1657720531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1350121536 + 156025 = 36744^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350277561 - 2⁷ = 1350277433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1350277561.

It is not a weakly prime, because it can be changed into another prime (1350277501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675138780 + 675138781.

It is an arithmetic number, because the mean of its divisors is an integer number (675138781).

Almost surely, 2^1350277561 is an apocalyptic number.

It is an amenable number.

1350277561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1350277561 is an equidigital number, since it uses as much as digits as its factorization.

1350277561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 1350277561 is about 36746.1230744143. The cubic root of 1350277561 is about 1105.2851883622.

The spelling of 1350277561 in words is "one billion, three hundred fifty million, two hundred seventy-seven thousand, five hundred sixty-one".