1055191 has 2 divisors, whose sum is σ = 1055192. Its totient is φ = 1055190.

The previous prime is 1055189. The next prime is 1055231. The reversal of 1055191 is 1915501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1055191 - 2¹ = 1055189 is a prime.

It is a super-2 number, since 2×1055191² = 2226856092962, which contains 22 as substring.

Together with 1055189, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527595 + 527596.

It is an arithmetic number, because the mean of its divisors is an integer number (527596).

2^1055191 is an apocalyptic number.

1055191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055191 is an equidigital number, since it uses as much as digits as its factorization.

1055191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225, while the sum is 22.

The square root of 1055191 is about 1027.2249023461. The cubic root of 1055191 is about 101.8068560812.

The spelling of 1055191 in words is "one million, fifty-five thousand, one hundred ninety-one".