51145024 has 84 divisors (see below), whose sum is σ = 120920256. Its totient is φ = 21391104.

The previous prime is 51145021. The next prime is 51145033. The reversal of 51145024 is 42054115.

It is a junction number, because it is equal to n+sod(n) for n = 51144986 and 51145004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51145021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147219 + ... + 147565.

Almost surely, 2^51145024 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 51145024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60460128).

51145024 is an abundant number, since it is smaller than the sum of its proper divisors (69775232).

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

51145024 is a wasteful number, since it uses less digits than its factorization.

51145024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51145024 is about 7151.5749314399. The cubic root of 51145024 is about 371.1941549317.

Adding to 51145024 its reverse (42054115), we get a palindrome (93199139).

Subtracting from 51145024 its reverse (42054115), we obtain a palindrome (9090909).

The spelling of 51145024 in words is "fifty-one million, one hundred forty-five thousand, twenty-four".