51041243 has 4 divisors (see below), whose sum is σ = 55681368. Its totient is φ = 46401120.

The previous prime is 51041231. The next prime is 51041257. The reversal of 51041243 is 34214015.

51041243 = 27⁴ + 28⁴ + ... + 48⁴.

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 51041243 - 2⁴ = 51041227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51041143) 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, 2320046 + ... + 2320067.

It is an arithmetic number, because the mean of its divisors is an integer number (13920342).

Almost surely, 2^51041243 is an apocalyptic number.

51041243 is a deficient number, since it is larger than the sum of its proper divisors (4640125).

51041243 is a wasteful number, since it uses less digits than its factorization.

51041243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4640124.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 51041243 is about 7144.3154325660. The cubic root of 51041243 is about 370.9429152004.

Adding to 51041243 its reverse (34214015), we get a palindrome (85255258).

The spelling of 51041243 in words is "fifty-one million, forty-one thousand, two hundred forty-three".