2261111052 has 24 divisors (see below), whose sum is σ = 5348200816. Its totient is φ = 743378688.

The previous prime is 2261111051. The next prime is 2261111057. The reversal of 2261111052 is 2501111622.

It is a super-2 number, since 2×2261111052² = 10225246378953093408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261111051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289713 + ... + 1291464.

Almost surely, 2^2261111052 is an apocalyptic number.

It is an amenable number.

2261111052 is an abundant number, since it is smaller than the sum of its proper divisors (3087089764).

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

2261111052 is a wasteful number, since it uses less digits than its factorization.

2261111052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581257 (or 2581255 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 2261111052 is about 47551.1414374040. The cubic root of 2261111052 is about 1312.5241335789.

Adding to 2261111052 its reverse (2501111622), we get a palindrome (4762222674).

The spelling of 2261111052 in words is "two billion, two hundred sixty-one million, one hundred eleven thousand, fifty-two".