51256205 has 96 divisors (see below), whose sum is σ = 89376000. Its totient is φ = 27941760.

The previous prime is 51256201. The next prime is 51256217. The reversal of 51256205 is 50265215.

51256205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51256205 - 2² = 51256201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51256201) 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 in 95 ways as a sum of consecutive naturals, for example, 2697686 + ... + 2697704.

It is an arithmetic number, because the mean of its divisors is an integer number (931000).

Almost surely, 2^51256205 is an apocalyptic number.

51256205 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51256205 is a deficient number, since it is larger than the sum of its proper divisors (38119795).

51256205 is a wasteful number, since it uses less digits than its factorization.

51256205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 51256205 is about 7159.3438945199. The cubic root of 51256205 is about 371.4629322607.

The spelling of 51256205 in words is "fifty-one million, two hundred fifty-six thousand, two hundred five".