1131055459 has 4 divisors (see below), whose sum is σ = 1132151416. Its totient is φ = 1129959504.

The previous prime is 1131055451. The next prime is 1131055487. The reversal of 1131055459 is 9545501311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131055459 - 2³ = 1131055451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131055451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546429 + ... + 548494.

It is an arithmetic number, because the mean of its divisors is an integer number (283037854).

Almost surely, 2^1131055459 is an apocalyptic number.

1131055459 is a deficient number, since it is larger than the sum of its proper divisors (1095957).

1131055459 is a wasteful number, since it uses less digits than its factorization.

1131055459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095956.

The product of its (nonzero) digits is 13500, while the sum is 34.

The square root of 1131055459 is about 33631.1679696082. The cubic root of 1131055459 is about 1041.9046270850.

The spelling of 1131055459 in words is "one billion, one hundred thirty-one million, fifty-five thousand, four hundred fifty-nine".