51225130 has 32 divisors (see below), whose sum is σ = 100906560. Its totient is φ = 18568320.

The previous prime is 51225067. The next prime is 51225143. The reversal of 51225130 is 3152215.

It is a junction number, because it is equal to n+sod(n) for n = 51225098 and 51225107.

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 15 ways as a sum of consecutive naturals, for example, 49761 + ... + 50779.

It is an arithmetic number, because the mean of its divisors is an integer number (3153330).

Almost surely, 2^51225130 is an apocalyptic number.

51225130 is a deficient number, since it is larger than the sum of its proper divisors (49681430).

51225130 is a wasteful number, since it uses less digits than its factorization.

51225130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51225130 is about 7157.1733247142. The cubic root of 51225130 is about 371.3878483812.

Adding to 51225130 its reverse (3152215), we get a palindrome (54377345).

The spelling of 51225130 in words is "fifty-one million, two hundred twenty-five thousand, one hundred thirty".