51240130 has 8 divisors (see below), whose sum is σ = 92232252. Its totient is φ = 20496048.

The previous prime is 51240121. The next prime is 51240221. The reversal of 51240130 is 3104215.

51240130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47155689 + 4084441 = 6867^2 + 2021^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2561997 + ... + 2562016.

Almost surely, 2^51240130 is an apocalyptic number.

51240130 is a deficient number, since it is larger than the sum of its proper divisors (40992122).

51240130 is a wasteful number, since it uses less digits than its factorization.

51240130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124020.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51240130 is about 7158.2211477433. The cubic root of 51240130 is about 371.4240953955.

Adding to 51240130 its reverse (3104215), we get a palindrome (54344345).

The spelling of 51240130 in words is "fifty-one million, two hundred forty thousand, one hundred thirty".