51042943 has 8 divisors (see below), whose sum is σ = 59911712. Its totient is φ = 42568416.

The previous prime is 51042919. The next prime is 51042947. The reversal of 51042943 is 34924015.

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 51042943 - 2²⁵ = 17488511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51042947) 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, 98280 + ... + 98797.

It is an arithmetic number, because the mean of its divisors is an integer number (7488964).

Almost surely, 2^51042943 is an apocalyptic number.

51042943 is a deficient number, since it is larger than the sum of its proper divisors (8868769).

51042943 is a wasteful number, since it uses less digits than its factorization.

51042943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197121.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 51042943 is about 7144.4344072852. The cubic root of 51042943 is about 370.9470334122.

Adding to 51042943 its reverse (34924015), we get a palindrome (85966958).

The spelling of 51042943 in words is "fifty-one million, forty-two thousand, nine hundred forty-three".