1140305551 has 8 divisors (see below), whose sum is σ = 1421679744. Its totient is φ = 888549720.

The previous prime is 1140305533. The next prime is 1140305557. The reversal of 1140305551 is 1555030411.

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 not a de Polignac number, because 1140305551 - 2⁷ = 1140305423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140305557) 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, 7404505 + ... + 7404658.

It is an arithmetic number, because the mean of its divisors is an integer number (177709968).

Almost surely, 2^1140305551 is an apocalyptic number.

1140305551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1140305551 is a deficient number, since it is larger than the sum of its proper divisors (281374193).

1140305551 is a wasteful number, since it uses less digits than its factorization.

1140305551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14809181.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1140305551 is about 33768.4105489139. The cubic root of 1140305551 is about 1044.7372494783.

Adding to 1140305551 its reverse (1555030411), we get a palindrome (2695335962).

The spelling of 1140305551 in words is "one billion, one hundred forty million, three hundred five thousand, five hundred fifty-one".