10751981 has 2 divisors, whose sum is σ = 10751982. Its totient is φ = 10751980.

The previous prime is 10751977. The next prime is 10751987. The reversal of 10751981 is 18915701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8649481 + 2102500 = 2941^2 + 1450^2 .

It is a cyclic number.

It is not a de Polignac number, because 10751981 - 2² = 10751977 is a prime.

It is a super-2 number, since 2×10751981² = 231210190848722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10751987) 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, 5375990 + 5375991.

It is an arithmetic number, because the mean of its divisors is an integer number (5375991).

Almost surely, 2^10751981 is an apocalyptic number.

It is an amenable number.

10751981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10751981 is an equidigital number, since it uses as much as digits as its factorization.

10751981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 10751981 is about 3279.0213479024. The cubic root of 10751981 is about 220.7138041016.

The spelling of 10751981 in words is "ten million, seven hundred fifty-one thousand, nine hundred eighty-one".