51144233 has 4 divisors (see below), whose sum is σ = 58450560. Its totient is φ = 43837908.

The previous prime is 51144187. The next prime is 51144263. The reversal of 51144233 is 33244115.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33244115 = 5 ⋅6648823.

It is a cyclic number.

It is not a de Polignac number, because 51144233 - 2⁸ = 51143977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51144199 and 51144208.

It is not an unprimeable number, because it can be changed into a prime (51144263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3653153 + ... + 3653166.

It is an arithmetic number, because the mean of its divisors is an integer number (14612640).

Almost surely, 2^51144233 is an apocalyptic number.

It is an amenable number.

51144233 is a deficient number, since it is larger than the sum of its proper divisors (7306327).

51144233 is an equidigital number, since it uses as much as digits as its factorization.

51144233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7306326.

The product of its digits is 1440, while the sum is 23.

The square root of 51144233 is about 7151.5196287223. The cubic root of 51144233 is about 371.1922413139.

Adding to 51144233 its reverse (33244115), we get a palindrome (84388348).

It can be divided in two parts, 511 and 44233, that added together give a palindrome (44744).

The spelling of 51144233 in words is "fifty-one million, one hundred forty-four thousand, two hundred thirty-three".