10851961 has 8 divisors (see below), whose sum is σ = 11185544. Its totient is φ = 10523520.

The previous prime is 10851959. The next prime is 10851979. The reversal of 10851961 is 16915801.

It can be written as a sum of positive squares in 4 ways, for example, as 1610361 + 9241600 = 1269^2 + 3040^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10851961 - 2¹ = 10851959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10851901) 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 in 7 ways as a sum of consecutive naturals, for example, 3235 + ... + 5671.

It is an arithmetic number, because the mean of its divisors is an integer number (1398193).

Almost surely, 2^10851961 is an apocalyptic number.

It is an amenable number.

10851961 is a deficient number, since it is larger than the sum of its proper divisors (333583).

10851961 is an equidigital number, since it uses as much as digits as its factorization.

10851961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571.

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

The square root of 10851961 is about 3294.2314733485. The cubic root of 10851961 is about 221.3958154410.

The spelling of 10851961 in words is "ten million, eight hundred fifty-one thousand, nine hundred sixty-one".