10155881 has 2 divisors, whose sum is σ = 10155882. Its totient is φ = 10155880.

The previous prime is 10155877. The next prime is 10155883. The reversal of 10155881 is 18855101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9665881 + 490000 = 3109^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 10155881 - 2² = 10155877 is a prime.

It is a super-2 number, since 2×10155881² = 206283837772322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 10155883, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10155883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5077940 + 5077941.

It is an arithmetic number, because the mean of its divisors is an integer number (5077941).

Almost surely, 2^10155881 is an apocalyptic number.

It is an amenable number.

10155881 is a deficient number, since it is larger than the sum of its proper divisors (1).

10155881 is an equidigital number, since it uses as much as digits as its factorization.

10155881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 10155881 is about 3186.8293019865. The cubic root of 10155881 is about 216.5571535980.

The spelling of 10155881 in words is "ten million, one hundred fifty-five thousand, eight hundred eighty-one".