51515150 has 24 divisors (see below), whose sum is σ = 96723720. Its totient is φ = 20411360.

The previous prime is 51515129. The next prime is 51515159. The reversal of 51515150 is 5151515.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51515159) 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 11 ways as a sum of consecutive naturals, for example, 536 + ... + 10164.

It is an arithmetic number, because the mean of its divisors is an integer number (4030155).

Almost surely, 2^51515150 is an apocalyptic number.

51515150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51515150 is a deficient number, since it is larger than the sum of its proper divisors (45208570).

51515150 is a wasteful number, since it uses less digits than its factorization.

51515150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9748 (or 9743 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 51515150 is about 7177.4055201027. The cubic root of 51515150 is about 372.0874221253.

Adding to 51515150 its reverse (5151515), we get a palindrome (56666665).

Subtracting from 51515150 its reverse (5151515), we obtain a triangular number (46363635 = T₉₆₂₉).

It can be divided in two parts, 5151 and 5150, that added together give a palindrome (10301).

The spelling of 51515150 in words is "fifty-one million, five hundred fifteen thousand, one hundred fifty".