51265247 has 8 divisors (see below), whose sum is σ = 56179200. Its totient is φ = 46393560.

The previous prime is 51265241. The next prime is 51265267. The reversal of 51265247 is 74256215.

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

It is a cyclic number.

It is not a de Polignac number, because 51265247 - 2⁴ = 51265231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51265241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7997 + ... + 12902.

It is an arithmetic number, because the mean of its divisors is an integer number (7022400).

Almost surely, 2^51265247 is an apocalyptic number.

51265247 is a deficient number, since it is larger than the sum of its proper divisors (4913953).

51265247 is a wasteful number, since it uses less digits than its factorization.

51265247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21133.

The product of its digits is 16800, while the sum is 32.

The square root of 51265247 is about 7159.9753491196. The cubic root of 51265247 is about 371.4847739763.

The spelling of 51265247 in words is "fifty-one million, two hundred sixty-five thousand, two hundred forty-seven".