1305000533 has 4 divisors (see below), whose sum is σ = 1307725440. Its totient is φ = 1302275628.

The previous prime is 1305000509. The next prime is 1305000539. The reversal of 1305000533 is 3350005031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1305000533 - 2²⁴ = 1288223317 is a prime.

It is a super-2 number, since 2×1305000533² = 3406052782260568178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305000539) 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, 1361735 + ... + 1362692.

It is an arithmetic number, because the mean of its divisors is an integer number (326931360).

Almost surely, 2^1305000533 is an apocalyptic number.

It is an amenable number.

1305000533 is a deficient number, since it is larger than the sum of its proper divisors (2724907).

1305000533 is an equidigital number, since it uses as much as digits as its factorization.

1305000533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724906.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 1305000533 is about 36124.7911135829. The cubic root of 1305000533 is about 1092.7904634312.

Adding to 1305000533 its reverse (3350005031), we get a palindrome (4655005564).

The spelling of 1305000533 in words is "one billion, three hundred five million, five hundred thirty-three", and thus it is an aban number.