51331051 has 2 divisors, whose sum is σ = 51331052. Its totient is φ = 51331050.

The previous prime is 51331019. The next prime is 51331069. The reversal of 51331051 is 15013315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51331051 - 2⁵ = 51331019 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51331081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25665525 + 25665526.

It is an arithmetic number, because the mean of its divisors is an integer number (25665526).

Almost surely, 2^51331051 is an apocalyptic number.

51331051 is a deficient number, since it is larger than the sum of its proper divisors (1).

51331051 is an equidigital number, since it uses as much as digits as its factorization.

51331051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 51331051 is about 7164.5691426631. The cubic root of 51331051 is about 371.6436517976.

Adding to 51331051 its reverse (15013315), we get a palindrome (66344366).

The spelling of 51331051 in words is "fifty-one million, three hundred thirty-one thousand, fifty-one".