51232250 has 32 divisors (see below), whose sum is σ = 96904080. Its totient is φ = 20280000.

The previous prime is 51232219. The next prime is 51232261. The reversal of 51232250 is 5223215.

It can be written as a sum of positive squares in 8 ways, for example, as 27447121 + 23785129 = 5239^2 + 4877^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24236 + ... + 26264.

Almost surely, 2^51232250 is an apocalyptic number.

51232250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51232250 is a deficient number, since it is larger than the sum of its proper divisors (45671830).

51232250 is a wasteful number, since it uses less digits than its factorization.

51232250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147 (or 2137 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 51232250 is about 7157.6707105035. The cubic root of 51232250 is about 371.4050545128.

Adding to 51232250 its reverse (5223215), we get a palindrome (56455465).

The spelling of 51232250 in words is "fifty-one million, two hundred thirty-two thousand, two hundred fifty".