51010247 has 4 divisors (see below), whose sum is σ = 51026256. Its totient is φ = 50994240.

The previous prime is 51010237. The next prime is 51010259. The reversal of 51010247 is 74201015.

51010247 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.

It is a cyclic number.

It is not a de Polignac number, because 51010247 - 2¹⁶ = 50944711 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 (51010237) 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, 1418 + ... + 10199.

It is an arithmetic number, because the mean of its divisors is an integer number (12756564).

Almost surely, 2^51010247 is an apocalyptic number.

51010247 is a deficient number, since it is larger than the sum of its proper divisors (16009).

51010247 is a wasteful number, since it uses less digits than its factorization.

51010247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16008.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 51010247 is about 7142.1458260106. The cubic root of 51010247 is about 370.8678120476.

The spelling of 51010247 in words is "fifty-one million, ten thousand, two hundred forty-seven".