11578401 has 6 divisors (see below), whose sum is σ = 16724370. Its totient is φ = 7718928.

The previous prime is 11578397. The next prime is 11578421. The reversal of 11578401 is 10487511.

It can be written as a sum of positive squares in only one way, i.e., 11189025 + 389376 = 3345^2 + 624^2 .

It is not a de Polignac number, because 11578401 - 2² = 11578397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11578421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 643236 + ... + 643253.

It is an arithmetic number, because the mean of its divisors is an integer number (2787395).

Almost surely, 2^11578401 is an apocalyptic number.

It is an amenable number.

11578401 is a deficient number, since it is larger than the sum of its proper divisors (5145969).

11578401 is a wasteful number, since it uses less digits than its factorization.

11578401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286495 (or 1286492 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 11578401 is about 3402.7049534157. The cubic root of 11578401 is about 226.2296527391.

The spelling of 11578401 in words is "eleven million, five hundred seventy-eight thousand, four hundred one".