5651851 has 2 divisors, whose sum is σ = 5651852. Its totient is φ = 5651850.

The previous prime is 5651831. The next prime is 5651869. The reversal of 5651851 is 1581565.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5651851 is a prime.

It is not a weakly prime, because it can be changed into another prime (5651801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2825925 + 2825926.

It is an arithmetic number, because the mean of its divisors is an integer number (2825926).

Almost surely, 2^5651851 is an apocalyptic number.

5651851 is a deficient number, since it is larger than the sum of its proper divisors (1).

5651851 is an equidigital number, since it uses as much as digits as its factorization.

5651851 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5651851 is about 2377.3621936928. The cubic root of 5651851 is about 178.1271973054.

The spelling of 5651851 in words is "five million, six hundred fifty-one thousand, eight hundred fifty-one".