51245263 has 8 divisors (see below), whose sum is σ = 53196416. Its totient is φ = 49312800.

The previous prime is 51245237. The next prime is 51245273. The reversal of 51245263 is 36254215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51245263 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 (51245213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1045 + ... + 10177.

It is an arithmetic number, because the mean of its divisors is an integer number (6649552).

Almost surely, 2^51245263 is an apocalyptic number.

51245263 is a deficient number, since it is larger than the sum of its proper divisors (1951153).

51245263 is a wasteful number, since it uses less digits than its factorization.

51245263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9345.

The product of its digits is 7200, while the sum is 28.

The square root of 51245263 is about 7158.5796775617. The cubic root of 51245263 is about 371.4364974992.

Adding to 51245263 its reverse (36254215), we get a palindrome (87499478).

The spelling of 51245263 in words is "fifty-one million, two hundred forty-five thousand, two hundred sixty-three".