1055245 has 4 divisors (see below), whose sum is σ = 1266300. Its totient is φ = 844192.

The previous prime is 1055233. The next prime is 1055251. The reversal of 1055245 is 5425501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5425501 = 97 ⋅55933.

It can be written as a sum of positive squares in 2 ways, for example, as 212521 + 842724 = 461^2 + 918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055245 - 2⁹ = 1054733 is a prime.

It is a super-2 number, since 2×1055245² = 2227084020050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 105520 + ... + 105529.

It is an arithmetic number, because the mean of its divisors is an integer number (316575).

2^1055245 is an apocalyptic number.

It is an amenable number.

1055245 is a deficient number, since it is larger than the sum of its proper divisors (211055).

1055245 is an equidigital number, since it uses as much as digits as its factorization.

1055245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211054.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1055245 is about 1027.2511864194. The cubic root of 1055245 is about 101.8085927262.

It can be divided in two parts, 105 and 5245, that multiplied together give a triangular number (550725 = T₁₀₄₉).

The spelling of 1055245 in words is "one million, fifty-five thousand, two hundred forty-five".