51042043 has 4 divisors (see below), whose sum is σ = 54968368. Its totient is φ = 47115720.

The previous prime is 51041957. The next prime is 51042053. The reversal of 51042043 is 34024015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51042043 is a prime.

It is a super-2 number, since 2×51042043² = 5210580307227698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51042043.

It is not an unprimeable number, because it can be changed into a prime (51042053) 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, 1963143 + ... + 1963168.

It is an arithmetic number, because the mean of its divisors is an integer number (13742092).

Almost surely, 2^51042043 is an apocalyptic number.

51042043 is a deficient number, since it is larger than the sum of its proper divisors (3926325).

51042043 is a wasteful number, since it uses less digits than its factorization.

51042043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926324.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 51042043 is about 7144.3714209159. The cubic root of 51042043 is about 370.9448531938.

Adding to 51042043 its reverse (34024015), we get a palindrome (85066058).

The spelling of 51042043 in words is "fifty-one million, forty-two thousand, forty-three".