1145523355 has 4 divisors (see below), whose sum is σ = 1374628032. Its totient is φ = 916418680.

The previous prime is 1145523341. The next prime is 1145523371. The reversal of 1145523355 is 5533255411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5533255411 = 19 ⋅291223969.

It is not a de Polignac number, because 1145523355 - 2¹⁵ = 1145490587 is a prime.

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 1145523355.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114552331 + ... + 114552340.

It is an arithmetic number, because the mean of its divisors is an integer number (343657008).

Almost surely, 2^1145523355 is an apocalyptic number.

1145523355 is a deficient number, since it is larger than the sum of its proper divisors (229104677).

1145523355 is an equidigital number, since it uses as much as digits as its factorization.

1145523355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229104676.

The product of its digits is 45000, while the sum is 34.

The square root of 1145523355 is about 33845.5810261842. The cubic root of 1145523355 is about 1046.3283261538.

Adding to 1145523355 its reverse (5533255411), we get a palindrome (6678778766).

The spelling of 1145523355 in words is "one billion, one hundred forty-five million, five hundred twenty-three thousand, three hundred fifty-five".