51810151 has 2 divisors, whose sum is σ = 51810152. Its totient is φ = 51810150.

The previous prime is 51810139. The next prime is 51810173. The reversal of 51810151 is 15101815.

It is an a-pointer prime, because the next prime (51810173) can be obtained adding 51810151 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51810151 - 2⁵ = 51810119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51810251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25905075 + 25905076.

It is an arithmetic number, because the mean of its divisors is an integer number (25905076).

Almost surely, 2^51810151 is an apocalyptic number.

51810151 is a deficient number, since it is larger than the sum of its proper divisors (1).

51810151 is an equidigital number, since it uses as much as digits as its factorization.

51810151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 22.

The square root of 51810151 is about 7197.9268543102. The cubic root of 51810151 is about 372.7963223272.

Adding to 51810151 its reverse (15101815), we get a palindrome (66911966).

The spelling of 51810151 in words is "fifty-one million, eight hundred ten thousand, one hundred fifty-one".