51224733 has 12 divisors (see below), whose sum is σ = 84561568. Its totient is φ = 29271240.

The previous prime is 51224731. The next prime is 51224737. The reversal of 51224733 is 33742215.

It is not a de Polignac number, because 51224733 - 2¹ = 51224731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51224697 and 51224706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51224731) 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, 406483 + ... + 406608.

Almost surely, 2^51224733 is an apocalyptic number.

It is an amenable number.

51224733 is a deficient number, since it is larger than the sum of its proper divisors (33336835).

51224733 is a wasteful number, since it uses less digits than its factorization.

51224733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813104 (or 813101 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 51224733 is about 7157.1455902476. The cubic root of 51224733 is about 371.3868889474.

Adding to 51224733 its reverse (33742215), we get a palindrome (84966948).

The spelling of 51224733 in words is "fifty-one million, two hundred twenty-four thousand, seven hundred thirty-three".