51234137 has 4 divisors (see below), whose sum is σ = 51454260. Its totient is φ = 51014016.

The previous prime is 51234121. The next prime is 51234151. The reversal of 51234137 is 73143215.

51234137 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 can be written as a sum of positive squares in 2 ways, for example, as 17547721 + 33686416 = 4189^2 + 5804^2 .

It is a cyclic number.

It is not a de Polignac number, because 51234137 - 2⁴ = 51234121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51234167) 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, 109712 + ... + 110177.

It is an arithmetic number, because the mean of its divisors is an integer number (12863565).

Almost surely, 2^51234137 is an apocalyptic number.

It is an amenable number.

51234137 is a deficient number, since it is larger than the sum of its proper divisors (220123).

51234137 is a wasteful number, since it uses less digits than its factorization.

51234137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220122.

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

The square root of 51234137 is about 7157.8025259153. The cubic root of 51234137 is about 371.4096143537.

The spelling of 51234137 in words is "fifty-one million, two hundred thirty-four thousand, one hundred thirty-seven".