51372233 has 4 divisors (see below), whose sum is σ = 56042448. Its totient is φ = 46702020.

The previous prime is 51372227. The next prime is 51372241. The reversal of 51372233 is 33227315.

51372233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51372233 - 2¹² = 51368137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51372203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2335091 + ... + 2335112.

It is an arithmetic number, because the mean of its divisors is an integer number (14010612).

Almost surely, 2^51372233 is an apocalyptic number.

It is an amenable number.

51372233 is a deficient number, since it is larger than the sum of its proper divisors (4670215).

51372233 is a wasteful number, since it uses less digits than its factorization.

51372233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670214.

The product of its digits is 3780, while the sum is 26.

The square root of 51372233 is about 7167.4425704012. The cubic root of 51372233 is about 371.7430129536.

Adding to 51372233 its reverse (33227315), we get a palindrome (84599548).

The spelling of 51372233 in words is "fifty-one million, three hundred seventy-two thousand, two hundred thirty-three".