1141255511 has 4 divisors (see below), whose sum is σ = 1245006024. Its totient is φ = 1037505000.

The previous prime is 1141255487. The next prime is 1141255523. The reversal of 1141255511 is 1155521411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1155521411 = 11 ⋅105047401.

It is a cyclic number.

It is not a de Polignac number, because 1141255511 - 2⁶ = 1141255447 is a prime.

It is a super-3 number, since 3×1141255511³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141255571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51875240 + ... + 51875261.

It is an arithmetic number, because the mean of its divisors is an integer number (311251506).

Almost surely, 2^1141255511 is an apocalyptic number.

1141255511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1141255511 is a deficient number, since it is larger than the sum of its proper divisors (103750513).

1141255511 is a wasteful number, since it uses less digits than its factorization.

1141255511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103750512.

The product of its digits is 1000, while the sum is 26.

The square root of 1141255511 is about 33782.4734292799. The cubic root of 1141255511 is about 1045.0272837668.

Adding to 1141255511 its reverse (1155521411), we get a palindrome (2296776922).

It can be divided in two parts, 1141 and 255511, that added together give a palindrome (256652).

The spelling of 1141255511 in words is "one billion, one hundred forty-one million, two hundred fifty-five thousand, five hundred eleven".