1131055517 has 8 divisors (see below), whose sum is σ = 1157414400. Its totient is φ = 1104792304.

The previous prime is 1131055487. The next prime is 1131055529. The reversal of 1131055517 is 7155501311.

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 1131055517 - 2³⁰ = 57313693 is a prime.

It is a super-2 number, since 2×1131055517² = 2558573165072274578, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131055517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131055537) 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, 284 + ... + 47562.

It is an arithmetic number, because the mean of its divisors is an integer number (144676800).

Almost surely, 2^1131055517 is an apocalyptic number.

It is an amenable number.

1131055517 is a deficient number, since it is larger than the sum of its proper divisors (26358883).

1131055517 is an equidigital number, since it uses as much as digits as its factorization.

1131055517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47835.

The product of its (nonzero) digits is 2625, while the sum is 29.

The square root of 1131055517 is about 33631.1688319035. The cubic root of 1131055517 is about 1041.9046448944.

Adding to 1131055517 its reverse (7155501311), we get a palindrome (8286556828).

The spelling of 1131055517 in words is "one billion, one hundred thirty-one million, fifty-five thousand, five hundred seventeen".