51254943 has 4 divisors (see below), whose sum is σ = 68339928. Its totient is φ = 34169960.

The previous prime is 51254941. The next prime is 51254947. The reversal of 51254943 is 34945215.

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 51254943 - 2¹ = 51254941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51254941) 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, 8542488 + ... + 8542493.

It is an arithmetic number, because the mean of its divisors is an integer number (17084982).

Almost surely, 2^51254943 is an apocalyptic number.

51254943 is a deficient number, since it is larger than the sum of its proper divisors (17084985).

51254943 is a wasteful number, since it uses less digits than its factorization.

51254943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17084984.

The product of its digits is 21600, while the sum is 33.

The square root of 51254943 is about 7159.2557574094. The cubic root of 51254943 is about 371.4598835888.

It can be divided in two parts, 512 and 54943, that added together give a palindrome (55455).

The spelling of 51254943 in words is "fifty-one million, two hundred fifty-four thousand, nine hundred forty-three".