10951861 has 2 divisors, whose sum is σ = 10951862. Its totient is φ = 10951860.

The previous prime is 10951823. The next prime is 10951873. The reversal of 10951861 is 16815901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6728836 + 4223025 = 2594^2 + 2055^2 .

It is an emirp because it is prime and its reverse (16815901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10951861 - 2¹⁵ = 10919093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10951891) 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, 5475930 + 5475931.

It is an arithmetic number, because the mean of its divisors is an integer number (5475931).

Almost surely, 2^10951861 is an apocalyptic number.

It is an amenable number.

10951861 is a deficient number, since it is larger than the sum of its proper divisors (1).

10951861 is an equidigital number, since it uses as much as digits as its factorization.

10951861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 10951861 is about 3309.3596057243. The cubic root of 10951861 is about 222.0731098653.

The spelling of 10951861 in words is "ten million, nine hundred fifty-one thousand, eight hundred sixty-one".