51200242 has 8 divisors (see below), whose sum is σ = 76859100. Its totient is φ = 25580544.

The previous prime is 51200239. The next prime is 51200263. The reversal of 51200242 is 24200215.

It can be written as a sum of positive squares in 2 ways, for example, as 37957921 + 13242321 = 6161^2 + 3639^2 .

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

It is a super-3 number, since 3×51200242³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6267 + ... + 11902.

Almost surely, 2^51200242 is an apocalyptic number.

51200242 is a deficient number, since it is larger than the sum of its proper divisors (25658858).

51200242 is a wasteful number, since it uses less digits than its factorization.

51200242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19580.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 51200242 is about 7155.4344382434. The cubic root of 51200242 is about 371.3276917217.

Adding to 51200242 its reverse (24200215), we get a palindrome (75400457).

It can be divided in two parts, 51200 and 242, that multiplied together give a square (12390400 = 3520²).

The spelling of 51200242 in words is "fifty-one million, two hundred thousand, two hundred forty-two".