51172150 has 24 divisors (see below), whose sum is σ = 97397784. Its totient is φ = 19992000.

The previous prime is 51172133. The next prime is 51172249. The reversal of 51172150 is 5127115.

51172150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 9751 + ... + 14050.

It is an arithmetic number, because the mean of its divisors is an integer number (4058241).

Almost surely, 2^51172150 is an apocalyptic number.

51172150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51172150 is a deficient number, since it is larger than the sum of its proper divisors (46225634).

51172150 is a wasteful number, since it uses less digits than its factorization.

51172150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23856 (or 23851 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 51172150 is about 7153.4711853757. The cubic root of 51172150 is about 371.2597672649.

Adding to 51172150 its reverse (5127115), we get a palindrome (56299265).

The spelling of 51172150 in words is "fifty-one million, one hundred seventy-two thousand, one hundred fifty".