51008042 has 8 divisors (see below), whose sum is σ = 79150500. Its totient is φ = 24624544.

The previous prime is 51008029. The next prime is 51008047. The reversal of 51008042 is 24080015.

It can be written as a sum of positive squares in 2 ways, for example, as 50993881 + 14161 = 7141^2 + 119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51008047) 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, 439667 + ... + 439782.

Almost surely, 2^51008042 is an apocalyptic number.

51008042 is a deficient number, since it is larger than the sum of its proper divisors (28142458).

51008042 is a wasteful number, since it uses less digits than its factorization.

51008042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879480.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 51008042 is about 7141.9914589700. The cubic root of 51008042 is about 370.8624681846.

Adding to 51008042 its reverse (24080015), we get a palindrome (75088057).

The spelling of 51008042 in words is "fifty-one million, eight thousand, forty-two".