51450131 has 2 divisors, whose sum is σ = 51450132. Its totient is φ = 51450130.

The previous prime is 51450083. The next prime is 51450167. The reversal of 51450131 is 13105415.

51450131 is nontrivially palindromic in base 4 and base 16.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51450131 - 2⁶ = 51450067 is a prime.

It is a super-2 number, since 2×51450131² = 5294231959834322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51150131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25725065 + 25725066.

It is an arithmetic number, because the mean of its divisors is an integer number (25725066).

Almost surely, 2^51450131 is an apocalyptic number.

51450131 is a deficient number, since it is larger than the sum of its proper divisors (1).

51450131 is an equidigital number, since it uses as much as digits as its factorization.

51450131 is an odious number, because the sum of its binary digits is odd.

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

The square root of 51450131 is about 7172.8746678023. The cubic root of 51450131 is about 371.9308148787.

Adding to 51450131 its reverse (13105415), we get a palindrome (64555546).

The spelling of 51450131 in words is "fifty-one million, four hundred fifty thousand, one hundred thirty-one".