51206237 has 4 divisors (see below), whose sum is σ = 51269280. Its totient is φ = 51143196.

The previous prime is 51206231. The next prime is 51206333. The reversal of 51206237 is 73260215.

51206237 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51206237 - 2⁶ = 51206173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51206231) 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 3 ways as a sum of consecutive naturals, for example, 30287 + ... + 31932.

It is an arithmetic number, because the mean of its divisors is an integer number (12817320).

Almost surely, 2^51206237 is an apocalyptic number.

It is an amenable number.

51206237 is a deficient number, since it is larger than the sum of its proper divisors (63043).

51206237 is an equidigital number, since it uses as much as digits as its factorization.

51206237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63042.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 51206237 is about 7155.8533383518. The cubic root of 51206237 is about 371.3421839880.

The spelling of 51206237 in words is "fifty-one million, two hundred six thousand, two hundred thirty-seven".