51143137 has 2 divisors, whose sum is σ = 51143138. Its totient is φ = 51143136.

The previous prime is 51143119. The next prime is 51143159. The reversal of 51143137 is 73134115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32901696 + 18241441 = 5736^2 + 4271^2 .

It is a cyclic number.

It is not a de Polignac number, because 51143137 - 2¹¹ = 51141089 is a prime.

It is not a weakly prime, because it can be changed into another prime (51143107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25571568 + 25571569.

It is an arithmetic number, because the mean of its divisors is an integer number (25571569).

Almost surely, 2^51143137 is an apocalyptic number.

It is an amenable number.

51143137 is a deficient number, since it is larger than the sum of its proper divisors (1).

51143137 is an equidigital number, since it uses as much as digits as its factorization.

51143137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 25.

The square root of 51143137 is about 7151.4430012411. The cubic root of 51143137 is about 371.1895897957.

The spelling of 51143137 in words is "fifty-one million, one hundred forty-three thousand, one hundred thirty-seven".