1350512561 has 2 divisors, whose sum is σ = 1350512562. Its totient is φ = 1350512560.

The previous prime is 1350512519. The next prime is 1350512573. The reversal of 1350512561 is 1652150531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251390625 + 99121936 = 35375^2 + 9956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350512561 - 2⁶ = 1350512497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1350515561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675256280 + 675256281.

It is an arithmetic number, because the mean of its divisors is an integer number (675256281).

Almost surely, 2^1350512561 is an apocalyptic number.

It is an amenable number.

1350512561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1350512561 is an equidigital number, since it uses as much as digits as its factorization.

1350512561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1350512561 is about 36749.3205515422. The cubic root of 1350512561 is about 1105.3493052914.

The spelling of 1350512561 in words is "one billion, three hundred fifty million, five hundred twelve thousand, five hundred sixty-one".