11505001 has 2 divisors, whose sum is σ = 11505002. Its totient is φ = 11505000.

The previous prime is 11504981. The next prime is 11505017. The reversal of 11505001 is 10050511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10896601 + 608400 = 3301^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 11505001 - 2¹³ = 11496809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11505071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752500 + 5752501.

It is an arithmetic number, because the mean of its divisors is an integer number (5752501).

Almost surely, 2^11505001 is an apocalyptic number.

It is an amenable number.

11505001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505001 is an equidigital number, since it uses as much as digits as its factorization.

11505001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 11505001 is about 3391.9022686392. The cubic root of 11505001 is about 225.7505863096.

Adding to 11505001 its reverse (10050511), we get a palindrome (21555512).

The spelling of 11505001 in words is "eleven million, five hundred five thousand, one".