23211552 has 96 divisors (see below), whose sum is σ = 75019392. Its totient is φ = 6119424.

The previous prime is 23211541. The next prime is 23211553. The reversal of 23211552 is 25511232.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×23211552² = 1077552292497408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (23211553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7408 + ... + 10064.

It is an arithmetic number, because the mean of its divisors is an integer number (781452).

Almost surely, 2^23211552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23211552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37509696).

23211552 is an abundant number, since it is smaller than the sum of its proper divisors (51807840).

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

23211552 is a wasteful number, since it uses less digits than its factorization.

23211552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690 (or 2682 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 23211552 is about 4817.8368590063. The cubic root of 23211552 is about 285.2559596496.

Adding to 23211552 its reverse (25511232), we get a palindrome (48722784).

It can be divided in two parts, 23 and 211552, that added together give a triangular number (211575 = T₆₅₀).

The spelling of 23211552 in words is "twenty-three million, two hundred eleven thousand, five hundred fifty-two".