1105575491 has 2 divisors, whose sum is σ = 1105575492. Its totient is φ = 1105575490.

The previous prime is 1105575487. The next prime is 1105575517. The reversal of 1105575491 is 1945755011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1105575491 - 2² = 1105575487 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1105575791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552787745 + 552787746.

It is an arithmetic number, because the mean of its divisors is an integer number (552787746).

Almost surely, 2^1105575491 is an apocalyptic number.

1105575491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105575491 is an equidigital number, since it uses as much as digits as its factorization.

1105575491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 38.

The square root of 1105575491 is about 33250.1953528096. The cubic root of 1105575491 is about 1034.0212583877.

The spelling of 1105575491 in words is "one billion, one hundred five million, five hundred seventy-five thousand, four hundred ninety-one".