10781091 has 12 divisors (see below), whose sum is σ = 15643680. Its totient is φ = 7154640.

The previous prime is 10781063. The next prime is 10781093. The reversal of 10781091 is 19018701.

It is not a de Polignac number, because 10781091 - 2⁶ = 10781027 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (10781093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555 + ... + 4676.

It is an arithmetic number, because the mean of its divisors is an integer number (1303640).

Almost surely, 2^10781091 is an apocalyptic number.

10781091 is a deficient number, since it is larger than the sum of its proper divisors (4862589).

10781091 is a wasteful number, since it uses less digits than its factorization.

10781091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5466 (or 5463 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 10781091 is about 3283.4571719454. The cubic root of 10781091 is about 220.9128120548.

Adding to 10781091 its reverse (19018701), we get a palindrome (29799792).

The spelling of 10781091 in words is "ten million, seven hundred eighty-one thousand, ninety-one".