51226224 has 40 divisors (see below), whose sum is σ = 151240320. Its totient is φ = 14635968.

The previous prime is 51226213. The next prime is 51226271. The reversal of 51226224 is 42262215.

It is a happy number.

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 = 51226194 and 51226203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75894 + ... + 76565.

It is an arithmetic number, because the mean of its divisors is an integer number (3781008).

Almost surely, 2^51226224 is an apocalyptic number.

It is an amenable number.

51226224 is an abundant number, since it is smaller than the sum of its proper divisors (100014096).

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

51226224 is a wasteful number, since it uses less digits than its factorization.

51226224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152477 (or 152471 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 51226224 is about 7157.2497511265. The cubic root of 51226224 is about 371.3904922360.

Adding to 51226224 its reverse (42262215), we get a palindrome (93488439).

The spelling of 51226224 in words is "fifty-one million, two hundred twenty-six thousand, two hundred twenty-four".