11505401 has 2 divisors, whose sum is σ = 11505402. Its totient is φ = 11505400.

The previous prime is 11505383. The next prime is 11505407. The reversal of 11505401 is 10450511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6325225 + 5180176 = 2515^2 + 2276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11505401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11505401.

It is not a weakly prime, because it can be changed into another prime (11505407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752700 + 5752701.

It is an arithmetic number, because the mean of its divisors is an integer number (5752701).

Almost surely, 2^11505401 is an apocalyptic number.

It is an amenable number.

11505401 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505401 is an equidigital number, since it uses as much as digits as its factorization.

11505401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 11505401 is about 3391.9612320898. The cubic root of 11505401 is about 225.7532025396.

Adding to 11505401 its reverse (10450511), we get a palindrome (21955912).

The spelling of 11505401 in words is "eleven million, five hundred five thousand, four hundred one".