1161224355 has 16 divisors (see below), whose sum is σ = 1967251104. Its totient is φ = 582888960.

The previous prime is 1161224341. The next prime is 1161224357. The reversal of 1161224355 is 5534221611.

It is not a de Polignac number, because 1161224355 - 2⁷ = 1161224227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161224357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2276656 + ... + 2277165.

It is an arithmetic number, because the mean of its divisors is an integer number (122953194).

Almost surely, 2^1161224355 is an apocalyptic number.

1161224355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1161224355 is a deficient number, since it is larger than the sum of its proper divisors (806026749).

1161224355 is a wasteful number, since it uses less digits than its factorization.

1161224355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553846.

The product of its digits is 7200, while the sum is 30.

The square root of 1161224355 is about 34076.7421418187. The cubic root of 1161224355 is about 1051.0871144336.

Adding to 1161224355 its reverse (5534221611), we get a palindrome (6695445966).

The spelling of 1161224355 in words is "one billion, one hundred sixty-one million, two hundred twenty-four thousand, three hundred fifty-five".