51872206 has 4 divisors (see below), whose sum is σ = 77808312. Its totient is φ = 25936102.

The previous prime is 51872203. The next prime is 51872239. The reversal of 51872206 is 60227815.

51872206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a pancake number, because a pancake can be divided into 51872206 parts by 10185 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51872203) by changing a digit.

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 as a sum of consecutive naturals, namely, 12968050 + ... + 12968053.

It is an arithmetic number, because the mean of its divisors is an integer number (19452078).

Almost surely, 2^51872206 is an apocalyptic number.

51872206 is a deficient number, since it is larger than the sum of its proper divisors (25936106).

51872206 is a wasteful number, since it uses less digits than its factorization.

51872206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25936105.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 51872206 is about 7202.2361805206. The cubic root of 51872206 is about 372.9451004165.

The spelling of 51872206 in words is "fifty-one million, eight hundred seventy-two thousand, two hundred six".