51436224 has 84 divisors (see below), whose sum is σ = 168507664. Its totient is φ = 14694912.

The previous prime is 51436201. The next prime is 51436241. The reversal of 51436224 is 42263415.

51436224 is a `hidden beast` number, since 5 + 1 + 436 + 224 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2347 + ... + 10410.

Almost surely, 2^51436224 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 51436224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84253832).

51436224 is an abundant number, since it is smaller than the sum of its proper divisors (117071440).

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

51436224 is a wasteful number, since it uses less digits than its factorization.

51436224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12782 (or 12769 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 51436224 is about 7171.9051862110. The cubic root of 51436224 is about 371.8973008211.

Adding to 51436224 its reverse (42263415), we get a palindrome (93699639).

The spelling of 51436224 in words is "fifty-one million, four hundred thirty-six thousand, two hundred twenty-four".