1161213052 has 24 divisors (see below), whose sum is σ = 2129855616. Its totient is φ = 552906288.

The previous prime is 1161213047. The next prime is 1161213083. The reversal of 1161213052 is 2503121611.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6918 + ... + 48685.

It is an arithmetic number, because the mean of its divisors is an integer number (88743984).

Almost surely, 2^1161213052 is an apocalyptic number.

It is an amenable number.

1161213052 is a deficient number, since it is larger than the sum of its proper divisors (968642564).

1161213052 is a wasteful number, since it uses less digits than its factorization.

1161213052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55857 (or 55855 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1161213052 is about 34076.5762951620. The cubic root of 1161213052 is about 1051.0837041032.

Adding to 1161213052 its reverse (2503121611), we get a palindrome (3664334663).

The spelling of 1161213052 in words is "one billion, one hundred sixty-one million, two hundred thirteen thousand, fifty-two".