51250042 has 8 divisors (see below), whose sum is σ = 78022656. Its totient is φ = 25242492.

The previous prime is 51250013. The next prime is 51250057. The reversal of 51250042 is 24005215.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191098 + ... + 191365.

It is an arithmetic number, because the mean of its divisors is an integer number (9752832).

Almost surely, 2^51250042 is an apocalyptic number.

51250042 is a deficient number, since it is larger than the sum of its proper divisors (26772614).

51250042 is a wasteful number, since it uses less digits than its factorization.

51250042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382532.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 51250042 is about 7158.9134650448. The cubic root of 51250042 is about 371.4480435410.

Adding to 51250042 its reverse (24005215), we get a palindrome (75255257).

The spelling of 51250042 in words is "fifty-one million, two hundred fifty thousand, forty-two".