51345151 has 16 divisors (see below), whose sum is σ = 63872928. Its totient is φ = 40550400.

The previous prime is 51345149. The next prime is 51345157. The reversal of 51345151 is 15154315.

It is a happy number.

It is not a de Polignac number, because 51345151 - 2¹ = 51345149 is a prime.

It is a Duffinian number.

51345151 is a modest number, since divided by 5151 gives 5134 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51345157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8130 + ... + 12991.

It is an arithmetic number, because the mean of its divisors is an integer number (3992058).

Almost surely, 2^51345151 is an apocalyptic number.

51345151 is a deficient number, since it is larger than the sum of its proper divisors (12527777).

51345151 is a wasteful number, since it uses less digits than its factorization.

51345151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21162.

The product of its digits is 1500, while the sum is 25.

The square root of 51345151 is about 7165.5530840264. The cubic root of 51345151 is about 371.6776773088.

Adding to 51345151 its reverse (15154315), we get a palindrome (66499466).

The spelling of 51345151 in words is "fifty-one million, three hundred forty-five thousand, one hundred fifty-one".