10051861 has 2 divisors, whose sum is σ = 10051862. Its totient is φ = 10051860.

The previous prime is 10051859. The next prime is 10051891. The reversal of 10051861 is 16815001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9186961 + 864900 = 3031^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 10051861 - 2¹ = 10051859 is a prime.

Together with 10051859, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10051801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025930 + 5025931.

It is an arithmetic number, because the mean of its divisors is an integer number (5025931).

Almost surely, 2^10051861 is an apocalyptic number.

It is an amenable number.

10051861 is a deficient number, since it is larger than the sum of its proper divisors (1).

10051861 is an equidigital number, since it uses as much as digits as its factorization.

10051861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 10051861 is about 3170.4670003014. The cubic root of 10051861 is about 215.8152641446.

Adding to 10051861 its reverse (16815001), we get a palindrome (26866862).

The spelling of 10051861 in words is "ten million, fifty-one thousand, eight hundred sixty-one".