51263750 has 20 divisors (see below), whose sum is σ = 96091116. Its totient is φ = 20505000.

The previous prime is 51263749. The next prime is 51263753. The reversal of 51263750 is 5736215.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51263753) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 19256 + ... + 21755.

Almost surely, 2^51263750 is an apocalyptic number.

51263750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51263750 is a deficient number, since it is larger than the sum of its proper divisors (44827366).

51263750 is an equidigital number, since it uses as much as digits as its factorization.

51263750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41033 (or 41018 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 51263750 is about 7159.8708088903. The cubic root of 51263750 is about 371.4811580236.

Adding to 51263750 its reverse (5736215), we get a palindrome (56999965).

The spelling of 51263750 in words is "fifty-one million, two hundred sixty-three thousand, seven hundred fifty".