51765150 has 48 divisors (see below), whose sum is σ = 128835504. Its totient is φ = 13754880.

The previous prime is 51765143. The next prime is 51765167. The reversal of 51765150 is 5156715.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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, 64552 + ... + 65348.

It is an arithmetic number, because the mean of its divisors is an integer number (2684073).

Almost surely, 2^51765150 is an apocalyptic number.

51765150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51765150 is an abundant number, since it is smaller than the sum of its proper divisors (77070354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51765150 is a wasteful number, since it uses less digits than its factorization.

51765150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 51765150 is about 7194.8002057041. The cubic root of 51765150 is about 372.6883572119.

Adding to 51765150 its product of nonzero digits (5250), we get a triangular number (51770400 = T₁₀₁₇₅).

It can be divided in two parts, 51765 and 150, that added together give a palindrome (51915).

The spelling of 51765150 in words is "fifty-one million, seven hundred sixty-five thousand, one hundred fifty".