11443651 has 4 divisors (see below), whose sum is σ = 11460904. Its totient is φ = 11426400.

The previous prime is 11443637. The next prime is 11443697. The reversal of 11443651 is 15634411.

It is a semiprime because it is the product of two primes.

It is a 5-Lehmer number, since φ(11443651) divides (11443651-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 11443651 - 2²³ = 3055043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11443631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7590 + ... + 8971.

It is an arithmetic number, because the mean of its divisors is an integer number (2865226).

Almost surely, 2^11443651 is an apocalyptic number.

11443651 is the 2140-th centered pentagonal number.

11443651 is a deficient number, since it is larger than the sum of its proper divisors (17253).

11443651 is an equidigital number, since it uses as much as digits as its factorization.

11443651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17252.

The product of its digits is 1440, while the sum is 25.

The square root of 11443651 is about 3382.8465823918. The cubic root of 11443651 is about 225.3486020041.

It can be divided in two parts, 114436 and 51, that multiplied together give a triangular number (5836236 = T₃₄₁₆).

The spelling of 11443651 in words is "eleven million, four hundred forty-three thousand, six hundred fifty-one".