2111543252 has 24 divisors (see below), whose sum is σ = 4547940096. Its totient is φ = 835335648.

The previous prime is 2111543209. The next prime is 2111543263. The reversal of 2111543252 is 2523451112.

It is a super-2 number, since 2×2111543252² = 8917229810133471008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 2900108 + ... + 2900835.

It is an arithmetic number, because the mean of its divisors is an integer number (189497504).

Almost surely, 2^2111543252 is an apocalyptic number.

It is an amenable number.

2111543252 is an abundant number, since it is smaller than the sum of its proper divisors (2436396844).

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

2111543252 is a wasteful number, since it uses less digits than its factorization.

2111543252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5800967 (or 5800965 counting only the distinct ones).

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

The square root of 2111543252 is about 45951.5315522780. The cubic root of 2111543252 is about 1282.9212357538.

Adding to 2111543252 its reverse (2523451112), we get a palindrome (4634994364).

The spelling of 2111543252 in words is "two billion, one hundred eleven million, five hundred forty-three thousand, two hundred fifty-two".