1026545 has 16 divisors (see below), whose sum is σ = 1406160. Its totient is φ = 712704.

The previous prime is 1026521. The next prime is 1026547. The reversal of 1026545 is 5456201.

It can be written as a sum of positive squares in 8 ways, for example, as 187489 + 839056 = 433^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026545 - 2⁶ = 1026481 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1026545.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026547) 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 in 15 ways as a sum of consecutive naturals, for example, 641 + ... + 1569.

It is an arithmetic number, because the mean of its divisors is an integer number (87885).

2^1026545 is an apocalyptic number.

It is an amenable number.

1026545 is a deficient number, since it is larger than the sum of its proper divisors (379615).

1026545 is a wasteful number, since it uses less digits than its factorization.

1026545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1026545 is about 1013.1855703670. The cubic root of 1026545 is about 100.8771174892.

It can be divided in two parts, 102 and 6545, that multiplied together give a triangular number (667590 = T₁₁₅₅).

The spelling of 1026545 in words is "one million, twenty-six thousand, five hundred forty-five".