51433424 has 40 divisors (see below), whose sum is σ = 115349760. Its totient is φ = 21760128.

The previous prime is 51433423. The next prime is 51433429. The reversal of 51433424 is 42433415.

It is a junction number, because it is equal to n+sod(n) for n = 51433393 and 51433402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51433423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5942 + ... + 11754.

It is an arithmetic number, because the mean of its divisors is an integer number (2883744).

Almost surely, 2^51433424 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 51433424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57674880).

51433424 is an abundant number, since it is smaller than the sum of its proper divisors (63916336).

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

51433424 is a wasteful number, since it uses less digits than its factorization.

51433424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5907 (or 5901 counting only the distinct ones).

The product of its digits is 5760, while the sum is 26.

The square root of 51433424 is about 7171.7099774043. The cubic root of 51433424 is about 371.8905524555.

Adding to 51433424 its reverse (42433415), we get a palindrome (93866839).

Subtracting from 51433424 its reverse (42433415), we obtain a palindrome (9000009).

The spelling of 51433424 in words is "fifty-one million, four hundred thirty-three thousand, four hundred twenty-four".