11889551 has 8 divisors (see below), whose sum is σ = 12441600. Its totient is φ = 11340472.

The previous prime is 11889547. The next prime is 11889569. The reversal of 11889551 is 15598811.

It is a happy number.

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

It is not a de Polignac number, because 11889551 - 2² = 11889547 is a prime.

It is a super-2 number, since 2×11889551² = 282722845963202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11889751) 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, 13346 + ... + 14208.

It is an arithmetic number, because the mean of its divisors is an integer number (1555200).

Almost surely, 2^11889551 is an apocalyptic number.

11889551 is a deficient number, since it is larger than the sum of its proper divisors (552049).

11889551 is an equidigital number, since it uses as much as digits as its factorization.

11889551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485.

The product of its digits is 14400, while the sum is 38.

The square root of 11889551 is about 3448.1228226384. The cubic root of 11889551 is about 228.2382794126.

The spelling of 11889551 in words is "eleven million, eight hundred eighty-nine thousand, five hundred fifty-one".