51891083 has 2 divisors, whose sum is σ = 51891084. Its totient is φ = 51891082.

The previous prime is 51891061. The next prime is 51891113. The reversal of 51891083 is 38019815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51891083 - 2²⁰ = 50842507 is a prime.

It is not a weakly prime, because it can be changed into another prime (51891043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25945541 + 25945542.

It is an arithmetic number, because the mean of its divisors is an integer number (25945542).

Almost surely, 2^51891083 is an apocalyptic number.

51891083 is a deficient number, since it is larger than the sum of its proper divisors (1).

51891083 is an equidigital number, since it uses as much as digits as its factorization.

51891083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 51891083 is about 7203.5465570787. The cubic root of 51891083 is about 372.9903348582.

The spelling of 51891083 in words is "fifty-one million, eight hundred ninety-one thousand, eighty-three".