51633223 has 2 divisors, whose sum is σ = 51633224. Its totient is φ = 51633222.

The previous prime is 51633217. The next prime is 51633251. The reversal of 51633223 is 32233615.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51633223 - 2¹³ = 51625031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51643223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25816611 + 25816612.

It is an arithmetic number, because the mean of its divisors is an integer number (25816612).

Almost surely, 2^51633223 is an apocalyptic number.

51633223 is a deficient number, since it is larger than the sum of its proper divisors (1).

51633223 is an equidigital number, since it uses as much as digits as its factorization.

51633223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 25.

The square root of 51633223 is about 7185.6261383403. The cubic root of 51633223 is about 372.3714806700.

Adding to 51633223 its reverse (32233615), we get a palindrome (83866838).

The spelling of 51633223 in words is "fifty-one million, six hundred thirty-three thousand, two hundred twenty-three".