51432250 has 32 divisors (see below), whose sum is σ = 96707520. Its totient is φ = 20482000.

The previous prime is 51432233. The next prime is 51432263. The reversal of 51432250 is 5223415.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104505 + ... + 104995.

It is an arithmetic number, because the mean of its divisors is an integer number (3022110).

Almost surely, 2^51432250 is an apocalyptic number.

51432250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51432250 is a deficient number, since it is larger than the sum of its proper divisors (45275270).

51432250 is a wasteful number, since it uses less digits than its factorization.

51432250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51432250 is about 7171.6281275593. The cubic root of 51432250 is about 371.8877228893.

Adding to 51432250 its reverse (5223415), we get a palindrome (56655665).

The spelling of 51432250 in words is "fifty-one million, four hundred thirty-two thousand, two hundred fifty".