1055239 has 4 divisors (see below), whose sum is σ = 1072600. Its totient is φ = 1037880.

The previous prime is 1055233. The next prime is 1055251. The reversal of 1055239 is 9325501.

1055239 = T₂ + T₃ + ... + T₁₈₄.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9325501 = 29 ⋅321569.

It is a cyclic number.

It is not a de Polignac number, because 1055239 - 2³ = 1055231 is a prime.

It is a super-2 number, since 2×1055239² = 2227058694242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8589 + ... + 8710.

It is an arithmetic number, because the mean of its divisors is an integer number (268150).

2^1055239 is an apocalyptic number.

1055239 is a deficient number, since it is larger than the sum of its proper divisors (17361).

1055239 is an equidigital number, since it uses as much as digits as its factorization.

1055239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17360.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 1055239 is about 1027.2482660000. The cubic root of 1055239 is about 101.8083997685.

The spelling of 1055239 in words is "one million, fifty-five thousand, two hundred thirty-nine".