51233424 has 80 divisors (see below), whose sum is σ = 152014080. Its totient is φ = 14705280.

The previous prime is 51233423. The next prime is 51233437. The reversal of 51233424 is 42433215.

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

It is a junction number, because it is equal to n+sod(n) for n = 51233394 and 51233403.

It is not an unprimeable number, because it can be changed into a prime (51233423) 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, 7479 + ... + 12585.

It is an arithmetic number, because the mean of its divisors is an integer number (1900176).

Almost surely, 2^51233424 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 51233424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76007040).

51233424 is an abundant number, since it is smaller than the sum of its proper divisors (100780656).

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

51233424 is a wasteful number, since it uses less digits than its factorization.

51233424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148 (or 5142 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 51233424 is about 7157.7527199534. The cubic root of 51233424 is about 371.4078914381.

Adding to 51233424 its reverse (42433215), we get a palindrome (93666639).

The spelling of 51233424 in words is "fifty-one million, two hundred thirty-three thousand, four hundred twenty-four".