1155253204 has 18 divisors (see below), whose sum is σ = 2351765850. Its totient is φ = 495108432.

The previous prime is 1155253201. The next prime is 1155253271. The reversal of 1155253204 is 4023525511.

It can be written as a sum of positive squares in only one way, i.e., 595457604 + 559795600 = 24402^2 + 23660^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155253201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2946879 + ... + 2947270.

Almost surely, 2^1155253204 is an apocalyptic number.

1155253204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1155253204 is an abundant number, since it is smaller than the sum of its proper divisors (1196512646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155253204 is a wasteful number, since it uses less digits than its factorization.

1155253204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5894167 (or 5894158 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1155253204 is about 33989.0159316212. The cubic root of 1155253204 is about 1049.2824134054.

Adding to 1155253204 its reverse (4023525511), we get a palindrome (5178778715).

The spelling of 1155253204 in words is "one billion, one hundred fifty-five million, two hundred fifty-three thousand, two hundred four".