1055399 has 2 divisors, whose sum is σ = 1055400. Its totient is φ = 1055398.

The previous prime is 1055387. The next prime is 1055407. The reversal of 1055399 is 9935501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1055399 - 2⁸ = 1055143 is a prime.

It is a super-2 number, since 2×1055399² = 2227734098402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527699 + 527700.

It is an arithmetic number, because the mean of its divisors is an integer number (527700).

2^1055399 is an apocalyptic number.

1055399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055399 is an equidigital number, since it uses as much as digits as its factorization.

1055399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 1055399 is about 1027.3261410088. The cubic root of 1055399 is about 101.8135450550.

The spelling of 1055399 in words is "one million, fifty-five thousand, three hundred ninety-nine".