1305500001 has 16 divisors (see below), whose sum is σ = 1880687424. Its totient is φ = 800760384.

The previous prime is 1305499999. The next prime is 1305500029. The reversal of 1305500001 is 1000055031.

It is not a de Polignac number, because 1305500001 - 2¹ = 1305499999 is a prime.

It is a super-2 number, since 2×1305500001² = 3408660505222000002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1305500041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42546 + ... + 66491.

It is an arithmetic number, because the mean of its divisors is an integer number (117542964).

Almost surely, 2^1305500001 is an apocalyptic number.

It is an amenable number.

1305500001 is a deficient number, since it is larger than the sum of its proper divisors (575187423).

1305500001 is a wasteful number, since it uses less digits than its factorization.

1305500001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109360.

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 1305500001 is about 36131.7035441176. The cubic root of 1305500001 is about 1092.9298616496.

Adding to 1305500001 its reverse (1000055031), we get a palindrome (2305555032).

The spelling of 1305500001 in words is "one billion, three hundred five million, five hundred thousand, one".