1199551 has 2 divisors, whose sum is σ = 1199552. Its totient is φ = 1199550.

The previous prime is 1199521. The next prime is 1199557. The reversal of 1199551 is 1559911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1199551 - 2⁷ = 1199423 is a prime.

It is a Chen prime.

It is a plaindrome in base 8.

It is a zygodrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1199557) 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, 599775 + 599776.

It is an arithmetic number, because the mean of its divisors is an integer number (599776).

2^1199551 is an apocalyptic number.

1199551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199551 is an equidigital number, since it uses as much as digits as its factorization.

1199551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2025, while the sum is 31.

The square root of 1199551 is about 1095.2401563128. The cubic root of 1199551 is about 106.2526015511.

The spelling of 1199551 in words is "one million, one hundred ninety-nine thousand, five hundred fifty-one".