51224033 has 4 divisors (see below), whose sum is σ = 58541760. Its totient is φ = 43906308.

The previous prime is 51224029. The next prime is 51224081. The reversal of 51224033 is 33042215.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51224033 - 2² = 51224029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51223996 and 51224014.

It is not an unprimeable number, because it can be changed into a prime (51224093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3658853 + ... + 3658866.

It is an arithmetic number, because the mean of its divisors is an integer number (14635440).

Almost surely, 2^51224033 is an apocalyptic number.

It is an amenable number.

51224033 is a deficient number, since it is larger than the sum of its proper divisors (7317727).

51224033 is an equidigital number, since it uses as much as digits as its factorization.

51224033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317726.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 51224033 is about 7157.0966879036. The cubic root of 51224033 is about 371.3851972386.

Adding to 51224033 its reverse (33042215), we get a palindrome (84266248).

The spelling of 51224033 in words is "fifty-one million, two hundred twenty-four thousand, thirty-three".