51512371 has 2 divisors, whose sum is σ = 51512372. Its totient is φ = 51512370.

The previous prime is 51512353. The next prime is 51512389. The reversal of 51512371 is 17321515.

It is a balanced prime because it is at equal distance from previous prime (51512353) and next prime (51512389).

It is a cyclic number.

It is not a de Polignac number, because 51512371 - 2¹³ = 51504179 is a prime.

It is not a weakly prime, because it can be changed into another prime (51515371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25756185 + 25756186.

It is an arithmetic number, because the mean of its divisors is an integer number (25756186).

Almost surely, 2^51512371 is an apocalyptic number.

51512371 is a deficient number, since it is larger than the sum of its proper divisors (1).

51512371 is an equidigital number, since it uses as much as digits as its factorization.

51512371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1050, while the sum is 25.

The square root of 51512371 is about 7177.2119238601. The cubic root of 51512371 is about 372.0807312163.

Adding to 51512371 its reverse (17321515), we get a palindrome (68833886).

The spelling of 51512371 in words is "fifty-one million, five hundred twelve thousand, three hundred seventy-one".