1145232253 has 4 divisors (see below), whose sum is σ = 1249344288. Its totient is φ = 1041120220.

The previous prime is 1145232229. The next prime is 1145232271. The reversal of 1145232253 is 3522325411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145232253 is a prime.

It is a super-2 number, since 2×1145232253² = 2623113826622912018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145232223) 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, 52056001 + ... + 52056022.

It is an arithmetic number, because the mean of its divisors is an integer number (312336072).

Almost surely, 2^1145232253 is an apocalyptic number.

It is an amenable number.

1145232253 is a deficient number, since it is larger than the sum of its proper divisors (104112035).

1145232253 is a wasteful number, since it uses less digits than its factorization.

1145232253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104112034.

The product of its digits is 7200, while the sum is 28.

The square root of 1145232253 is about 33841.2803097046. The cubic root of 1145232253 is about 1046.2396871716.

Adding to 1145232253 its reverse (3522325411), we get a palindrome (4667557664).

The spelling of 1145232253 in words is "one billion, one hundred forty-five million, two hundred thirty-two thousand, two hundred fifty-three".