51033263 has 4 divisors (see below), whose sum is σ = 51081048. Its totient is φ = 50985480.

The previous prime is 51033247. The next prime is 51033313. The reversal of 51033263 is 36233015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51033263 - 2⁴ = 51033247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51030263) 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, 22253 + ... + 24438.

It is an arithmetic number, because the mean of its divisors is an integer number (12770262).

Almost surely, 2^51033263 is an apocalyptic number.

51033263 is a deficient number, since it is larger than the sum of its proper divisors (47785).

51033263 is a wasteful number, since it uses less digits than its factorization.

51033263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47784.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 51033263 is about 7143.7569247560. The cubic root of 51033263 is about 370.9235826073.

Adding to 51033263 its reverse (36233015), we get a palindrome (87266278).

The spelling of 51033263 in words is "fifty-one million, thirty-three thousand, two hundred sixty-three".