1163521252 has 6 divisors (see below), whose sum is σ = 2036162198. Its totient is φ = 581760624.

The previous prime is 1163521211. The next prime is 1163521253. The reversal of 1163521252 is 2521253611.

It can be written as a sum of positive squares in only one way, i.e., 1161037476 + 2483776 = 34074^2 + 1576^2 .

It is a super-3 number, since 3×1163521252³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1163521252.

It is not an unprimeable number, because it can be changed into a prime (1163521253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145440153 + ... + 145440160.

Almost surely, 2^1163521252 is an apocalyptic number.

It is an amenable number.

1163521252 is a deficient number, since it is larger than the sum of its proper divisors (872640946).

1163521252 is a wasteful number, since it uses less digits than its factorization.

1163521252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290880317 (or 290880315 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 1163521252 is about 34110.4273206889. The cubic root of 1163521252 is about 1051.7796733382.

Adding to 1163521252 its reverse (2521253611), we get a palindrome (3684774863).

The spelling of 1163521252 in words is "one billion, one hundred sixty-three million, five hundred twenty-one thousand, two hundred fifty-two".