11140551 has 16 divisors (see below), whose sum is σ = 16857600. Its totient is φ = 7268184.

The previous prime is 11140541. The next prime is 11140573. The reversal of 11140551 is 15504111.

It is a happy number.

11140551 is a `hidden beast` number, since 1 + 114 + 0 + 551 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-11140551 is a prime.

It is a super-2 number, since 2×11140551² = 248223753167202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11140511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3121 + ... + 5658.

It is an arithmetic number, because the mean of its divisors is an integer number (1053600).

Almost surely, 2^11140551 is an apocalyptic number.

11140551 is a deficient number, since it is larger than the sum of its proper divisors (5717049).

11140551 is an equidigital number, since it uses as much as digits as its factorization.

11140551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8835 (or 8829 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 11140551 is about 3337.7463953991. The cubic root of 11140551 is about 223.3412232058.

Adding to 11140551 its reverse (15504111), we get a palindrome (26644662).

The spelling of 11140551 in words is "eleven million, one hundred forty thousand, five hundred fifty-one".