51065851 has 2 divisors, whose sum is σ = 51065852. Its totient is φ = 51065850.

The previous prime is 51065843. The next prime is 51065879. The reversal of 51065851 is 15856015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51065851 - 2³ = 51065843 is a prime.

It is a super-2 number, since 2×51065851² = 5215442276708402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51065801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25532925 + 25532926.

It is an arithmetic number, because the mean of its divisors is an integer number (25532926).

Almost surely, 2^51065851 is an apocalyptic number.

51065851 is a deficient number, since it is larger than the sum of its proper divisors (1).

51065851 is an equidigital number, since it uses as much as digits as its factorization.

51065851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 51065851 is about 7146.0374334312. The cubic root of 51065851 is about 371.0025186123.

The spelling of 51065851 in words is "fifty-one million, sixty-five thousand, eight hundred fifty-one".