1103591 has 2 divisors, whose sum is σ = 1103592. Its totient is φ = 1103590.

The previous prime is 1103587. The next prime is 1103603. The reversal of 1103591 is 1953011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1103591 - 2² = 1103587 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551795 + 551796.

It is an arithmetic number, because the mean of its divisors is an integer number (551796).

2^1103591 is an apocalyptic number.

1103591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103591 is an equidigital number, since it uses as much as digits as its factorization.

1103591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 1103591 is about 1050.5193953469. The cubic root of 1103591 is about 103.3402203758.

The spelling of 1103591 in words is "one million, one hundred three thousand, five hundred ninety-one".