51045131 has 2 divisors, whose sum is σ = 51045132. Its totient is φ = 51045130.

The previous prime is 51045107. The next prime is 51045143. The reversal of 51045131 is 13154015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51045131 - 2¹⁸ = 50782987 is a prime.

It is a super-2 number, since 2×51045131² = 5211210797614322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51045161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25522565 + 25522566.

It is an arithmetic number, because the mean of its divisors is an integer number (25522566).

Almost surely, 2^51045131 is an apocalyptic number.

51045131 is a deficient number, since it is larger than the sum of its proper divisors (1).

51045131 is an equidigital number, since it uses as much as digits as its factorization.

51045131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51045131 is about 7144.5875318314. The cubic root of 51045131 is about 370.9523336585.

Adding to 51045131 its reverse (13154015), we get a palindrome (64199146).

The spelling of 51045131 in words is "fifty-one million, forty-five thousand, one hundred thirty-one".