1352243561 has 2 divisors, whose sum is σ = 1352243562. Its totient is φ = 1352243560.

The previous prime is 1352243491. The next prime is 1352243573. The reversal of 1352243561 is 1653422531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 907877161 + 444366400 = 30131^2 + 21080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1352243561 - 2¹⁸ = 1351981417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1352243161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676121780 + 676121781.

It is an arithmetic number, because the mean of its divisors is an integer number (676121781).

Almost surely, 2^1352243561 is an apocalyptic number.

It is an amenable number.

1352243561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1352243561 is an equidigital number, since it uses as much as digits as its factorization.

1352243561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 1352243561 is about 36772.8644655268. The cubic root of 1352243561 is about 1105.8213588437.

The spelling of 1352243561 in words is "one billion, three hundred fifty-two million, two hundred forty-three thousand, five hundred sixty-one".