1305545441 has 4 divisors (see below), whose sum is σ = 1310962884. Its totient is φ = 1300128000.

The previous prime is 1305545431. The next prime is 1305545443. The reversal of 1305545441 is 1445455031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1445455031 = 239 ⋅6047929.

It can be written as a sum of positive squares in 2 ways, for example, as 348942400 + 956603041 = 18680^2 + 30929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305545441 - 2²² = 1301351137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1305545398 and 1305545407.

It is not an unprimeable number, because it can be changed into a prime (1305545443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2708360 + ... + 2708841.

It is an arithmetic number, because the mean of its divisors is an integer number (327740721).

Almost surely, 2^1305545441 is an apocalyptic number.

It is an amenable number.

1305545441 is a deficient number, since it is larger than the sum of its proper divisors (5417443).

1305545441 is an equidigital number, since it uses as much as digits as its factorization.

1305545441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417442.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 1305545441 is about 36132.3323492962. The cubic root of 1305545441 is about 1092.9425418888.

The spelling of 1305545441 in words is "one billion, three hundred five million, five hundred forty-five thousand, four hundred forty-one".