1127322157 has 4 divisors (see below), whose sum is σ = 1214039260. Its totient is φ = 1040605056.

The previous prime is 1127322143. The next prime is 1127322169. The reversal of 1127322157 is 7512237211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7512237211 = 2143 ⋅3505477.

It can be written as a sum of positive squares in 2 ways, for example, as 565916521 + 561405636 = 23789^2 + 23694^2 .

It is a cyclic number.

It is not a de Polignac number, because 1127322157 - 2¹¹ = 1127320109 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 (1127322127) 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, 43358532 + ... + 43358557.

It is an arithmetic number, because the mean of its divisors is an integer number (303509815).

Almost surely, 2^1127322157 is an apocalyptic number.

It is an amenable number.

1127322157 is a deficient number, since it is larger than the sum of its proper divisors (86717103).

1127322157 is an equidigital number, since it uses as much as digits as its factorization.

1127322157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86717102.

The product of its digits is 5880, while the sum is 31.

The square root of 1127322157 is about 33575.6184902080. The cubic root of 1127322157 is about 1040.7570169420.

Adding to 1127322157 its reverse (7512237211), we get a palindrome (8639559368).

The spelling of 1127322157 in words is "one billion, one hundred twenty-seven million, three hundred twenty-two thousand, one hundred fifty-seven".