51505150 has 48 divisors (see below), whose sum is σ = 98770464. Its totient is φ = 19975680.

The previous prime is 51505127. The next prime is 51505159. The reversal of 51505150 is 5150515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51505159) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 375882 + ... + 376018.

It is an arithmetic number, because the mean of its divisors is an integer number (2057718).

Almost surely, 2^51505150 is an apocalyptic number.

51505150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51505150 is a deficient number, since it is larger than the sum of its proper divisors (47265314).

51505150 is a wasteful number, since it uses less digits than its factorization.

51505150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 51505150 is about 7176.7088557360. The cubic root of 51505150 is about 372.0633443216.

Adding to 51505150 its reverse (5150515), we get a palindrome (56655665).

The spelling of 51505150 in words is "fifty-one million, five hundred five thousand, one hundred fifty".