51604250 has 32 divisors (see below), whose sum is σ = 97314048. Its totient is φ = 20490000.

The previous prime is 51604229. The next prime is 51604277. The reversal of 51604250 is 5240615.

51604250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 37067 + ... + 38433.

It is an arithmetic number, because the mean of its divisors is an integer number (3041064).

Almost surely, 2^51604250 is an apocalyptic number.

51604250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51604250 is a deficient number, since it is larger than the sum of its proper divisors (45709798).

51604250 is a wasteful number, since it uses less digits than its factorization.

51604250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51604250 is about 7183.6098167982. The cubic root of 51604250 is about 372.3018179162.

Adding to 51604250 its reverse (5240615), we get a palindrome (56844865).

Subtracting from 51604250 its reverse (5240615), we obtain a triangular number (46363635 = T₉₆₂₉).

The spelling of 51604250 in words is "fifty-one million, six hundred four thousand, two hundred fifty".