23151552 has 112 divisors (see below), whose sum is σ = 66824352. Its totient is φ = 7045120.

The previous prime is 23151539. The next prime is 23151559. The reversal of 23151552 is 25515132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23151559) 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, 133738 + ... + 133910.

It is an arithmetic number, because the mean of its divisors is an integer number (596646).

Almost surely, 2^23151552 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 23151552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33412176).

23151552 is an abundant number, since it is smaller than the sum of its proper divisors (43672800).

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

23151552 is a wasteful number, since it uses less digits than its factorization.

23151552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 236 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 23151552 is about 4811.6059689048. The cubic root of 23151552 is about 285.0099596396.

Adding to 23151552 its reverse (25515132), we get a palindrome (48666684).

The spelling of 23151552 in words is "twenty-three million, one hundred fifty-one thousand, five hundred fifty-two".