51071801 has 8 divisors (see below), whose sum is σ = 56176608. Its totient is φ = 46427700.

The previous prime is 51071777. The next prime is 51071821. The reversal of 51071801 is 10817015.

51071801 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 51071801 - 2⁶ = 51071737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51071821) 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 7 ways as a sum of consecutive naturals, for example, 17855 + ... + 20516.

It is an arithmetic number, because the mean of its divisors is an integer number (7022076).

Almost surely, 2^51071801 is an apocalyptic number.

It is an amenable number.

51071801 is a deficient number, since it is larger than the sum of its proper divisors (5104807).

51071801 is an equidigital number, since it uses as much as digits as its factorization.

51071801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38404 (or 38382 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 51071801 is about 7146.4537359448. The cubic root of 51071801 is about 371.0169273232.

Adding to 51071801 its reverse (10817015), we get a palindrome (61888816).

The spelling of 51071801 in words is "fifty-one million, seventy-one thousand, eight hundred one".