1154213252 has 6 divisors (see below), whose sum is σ = 2019873198. Its totient is φ = 577106624.

The previous prime is 1154213237. The next prime is 1154213257. The reversal of 1154213252 is 2523124511.

It can be written as a sum of positive squares in only one way, i.e., 845297476 + 308915776 = 29074^2 + 17576^2 .

It is not an unprimeable number, because it can be changed into a prime (1154213257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144276653 + ... + 144276660.

It is an arithmetic number, because the mean of its divisors is an integer number (336645533).

Almost surely, 2^1154213252 is an apocalyptic number.

It is an amenable number.

1154213252 is a deficient number, since it is larger than the sum of its proper divisors (865659946).

1154213252 is a wasteful number, since it uses less digits than its factorization.

1154213252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288553317 (or 288553315 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 1154213252 is about 33973.7141331353. The cubic root of 1154213252 is about 1048.9674663052.

Adding to 1154213252 its reverse (2523124511), we get a palindrome (3677337763).

The spelling of 1154213252 in words is "one billion, one hundred fifty-four million, two hundred thirteen thousand, two hundred fifty-two".