11401571 has 8 divisors (see below), whose sum is σ = 11645088. Its totient is φ = 11160000.

The previous prime is 11401561. The next prime is 11401601. The reversal of 11401571 is 17510411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11401571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11401561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18671 + ... + 19271.

It is an arithmetic number, because the mean of its divisors is an integer number (1455636).

Almost surely, 2^11401571 is an apocalyptic number.

11401571 is a deficient number, since it is larger than the sum of its proper divisors (243517).

11401571 is an equidigital number, since it uses as much as digits as its factorization.

11401571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 11401571 is about 3376.6212402341. The cubic root of 11401571 is about 225.0720493539.

Adding to 11401571 its reverse (17510411), we get a palindrome (28911982).

The spelling of 11401571 in words is "eleven million, four hundred one thousand, five hundred seventy-one".